Highest temperature in Boston on Jun 2, 2026?
Short Answer
The model sees potential mispricing: 71° to 72° at 32.5% model vs 51.0% market, suggesting the market may be overestimating the likelihood of this range being the highest temperature in Boston on June 2, 2026.
1. Executive Verdict
- NOAA and The Old Farmer's Almanac align on hotter-than-average early June.
- Strongest available predictions explicitly state 76°F as the highest temperature.
- El Niño conditions are likely, associated with warmer temperatures for June 2, 2026.
- Persistent atmospheric trough currently brings cooler coastal temperatures to Boston.
- Economic reports, including JOLTS Job Openings, are expected on June 2, 2026.
- Historical frequency of June 2 temperatures exceeding 77°F remains unknown.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| 77° or above | 1.0% | 2.5% | No specific forecast supports temperatures this high, despite general outlooks for a hotter-than-average early June. |
| 75° to 76° | 5.0% | 24.6% | No specific forecast currently predicts temperatures in this particular range. |
| 73° to 74° | 38.0% | 31.0% | Long-range outlooks for early June indicate 'hotter-than-average' conditions. |
| 69° to 70° | 11.0% | 5.6% | One specific forecast suggests a high temperature of 69°F. |
| 71° to 72° | 51.0% | 32.5% | The persistent atmospheric trough and E/NE onshore flow could influence conditions in this range. |
Current Context
Current forecasts indicate a partly sunny day with highs of 74-76°F. Current forecasts suggest a high of approximately 74°F (23°C) [^][^] to 76°F (24°C) [^][^] for Boston on June 2, 2026, with some sources estimating a high of 75°F (24°C) [^]. The day is generally described as partly sunny [^][^]. Long-range forecasts project summer 2026 in Boston to be hotter and drier than normal, with early June potentially being one of the hottest periods [^]. June in Boston typically marks the beginning of hot weather, although sea breezes often moderate extreme heat [^]. Average daily high temperatures for June increase from the low 70s°F (21-22°C) at the start of the month to around 80°F (26-27°C) by the end [^]. The city generally experiences about 3 days in June with temperatures reaching 90°F (32°C) or more [^][^]. Average low temperatures range from the mid-50s°F (13-14°C) early in the month to the mid-60s°F (17-18°C) later on [^]. June also sees decreasing cloud cover, with skies tending to be sunny or partly sunny for about 17 days [^][^]. The average monthly rainfall is around 3.9 inches (99 mm) over approximately 11 rainy days [^][^]. The average surface water temperature around Boston rapidly increases during June, rising from 54°F (12°C) to 62°F (17°C) [^][^].
A prediction market exists for Boston's daily temperature highs at Logan Airport. This prediction market focuses specifically on Boston's daily temperature highs, measured at Logan International Airport (KBOS) [^][^]. These markets, such as the ForecastEx temperature prediction market, allow participants to bet on whether the high temperature will be greater than a certain value [^]. Key factors influencing predictions in this market include the development of the sea breeze, which can significantly lower temperatures at Logan Airport compared to inland areas (by 10-15°F on summer days), and ocean temperatures [^]. Forecasting challenges involve accurately predicting the timing and strength of the sea breeze and the tracks of Nor'easters [^].
2. Market Behavior & Price Dynamics
Historical Price (Probability)
Outcome probability
Date
This market, which tracks the probability of Boston's high temperature being 68°F or below on June 2, 2026, has experienced a significant downward trend. Opening at a 35.0% probability, the price has since fallen to its current level of 3.0%. The most dramatic movement was a 34.0 percentage point drop on June 1, 2026, which effectively erased most of the contract's value. While the provided context notes no specific news or social media event as a direct trigger for this collapse, the price action is consistent with weather forecasts which indicate a high temperature between 74°F and 76°F, well above the market's resolution threshold.
Trading volume patterns suggest a strong conviction behind the price drop. After an initial period of low volume, trading activity surged as the price settled near its lows, as seen in the sample data showing 290.76 contracts traded at the 3.0% level. This increase in volume validates the sharp price decline and indicates that a large number of participants entered the market to affirm the low probability. The initial 35.0% price acted as a resistance level that was decisively broken. The market has since established a new support level in the 1.0% to 3.0% range. Overall, the chart suggests a strong and consolidated market sentiment that the high temperature will exceed 68°F, aligning with available weather information.
3. Significant Price Movements
Notable price changes detected in the chart, along with research into what caused each movement.
Outcome: 75° to 76°
📉 June 02, 2026: 15.0pp drop
Price decreased from 31.0% to 16.0%
What happened: The provided sources confirm that the highest temperature in Boston on June 2, 2026, was 76°F (24°C) [^][^], falling within the "75° to 76°" outcome range. However, the available information does not include details on social media activity, traditional news, or market structure factors that occurred prior to this date which could have driven the reported 15.0 percentage point drop in the prediction market. Therefore, without specific data regarding the timing and content of potential market-moving events, it is not possible to identify the primary driver of this price movement. Social media cannot be assessed as a primary driver, contributing accelerant, or noise based on the provided facts.
Outcome: 68° or below
📉 June 01, 2026: 34.0pp drop
Price decreased from 35.0% to 1.0%
What happened: Based on the provided web research, no social media activity, traditional news, or market structure factors could be identified as the primary driver for the 34.0 percentage point drop in the prediction market outcome "68° or below" on June 1, 2026. The available information primarily details historical temperatures, such as the 74°F recorded as the highest temperature in Boston on June 2, 2026 [^][^]. However, this actual outcome would be known only after the market movement on June 1, 2026. Therefore, without details regarding forecasts or relevant events available on June 1, 2026, the primary driver cannot be determined from the provided sources. Social media activity was not present in the provided information.
4. Market Data
Contract Snapshot
This market resolves to YES if the maximum temperature recorded in Boston on June 2, 2026, is between 71-72°F, and NO otherwise. The official outcome is determined by the National Weather Service's Climatological Report (Daily) for Boston, with preliminary NWS data potentially subject to rounding or conversion nuances. Trading closes at 11:59 PM local time on June 2, 2026, with expiration occurring based on data release or by June 3, 2026, at 1:00 am EDT, and insider trading is prohibited.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| 71° to 72° | $0.51 | $0.51 | 51% |
| 73° to 74° | $0.40 | $0.69 | 38% |
| 69° to 70° | $0.11 | $0.95 | 11% |
| 75° to 76° | $0.05 | $0.96 | 5% |
| 68° or below | $0.04 | $0.98 | 4% |
| 77° or above | $0.01 | $1.00 | 1% |
Market Discussion
The market largely anticipates the highest temperature in Boston on June 2, 2026, to be between 71° and 72°F, holding a 51% chance and a significant recent increase in probability. Trader "fish.mark" argues for temperatures in the 69° to 70° range due to onshore east flow but cautions about a potential "westerly heat burst." While some discussion points to factors limiting extreme highs, the market's probabilities suggest a moderate temperature outcome.
5. How do long-range forecasts from NOAA's Climate Prediction Center and The Old Farmer's Almanac align on the outlook for a hotter-than-average early June 2026 in Boston?
| Almanac June 2026 Boston Forecast | Scattered t-storms, turning hot [^] |
|---|---|
| NOAA June 2026 Northeast Outlook | Warmer than normal conditions likely [^] |
| Typical Early June Boston High | Low to mid-70s Fahrenheit (21-23°C) [^][^][^] |
Both long-range forecasts align on a hotter early June. NOAA's Climate Prediction Center and The Old Farmer's Almanac anticipate a likelihood of warmer-than-average conditions for Boston in early June 2026. The Old Farmer's Almanac specifically predicts that "Summer will be hotter and drier than normal" for the Northeast region, with the "hottest periods" occurring in "early June" and early to mid-July [^][^].
Specific forecasts detail warm conditions for early June. For the period of June 1-9, 2026, in Boston, The Old Farmer's Almanac's long-range forecast includes "Scattered t-storms, turning hot" [^]. NOAA's Climate Prediction Center, through its outlook for June 2026, expects most of the Northeast region to be warmer than normal, with a greater likelihood in parts of Massachusetts [^]. Historically, the typical average high temperature for Boston in early June ranges from the low to mid-70s Fahrenheit (approximately 21-23°C) [^][^][^].
6. How have high temperatures in the first week of June in Boston historically compared between recent El Niño and La Niña years, and what does the current ENSO forecast imply for June 2, 2026?
| Highest June avg high (first week) | 84.86°F (2021) [^] |
|---|---|
| El Niño chance (May-Jul 2026) | 82% [^][^] |
| Boston forecast (June 2, 2026) | 74°F (23°C) [^] |
Boston's June temperatures vary between El Niño and La Niña years. Historically, high temperatures in Boston during the first week of June have varied significantly depending on the prevailing ENSO phase. Although El Niño periods are generally associated with warmer average annual temperatures [^], the highest average high for this specific period among years examined occurred in 2021, a La Niña year, reaching 84.86°F. This year also set a record as Boston's warmest June on record [^].
El Niño conditions are highly probable for June 2026. Looking ahead to June 2, 2026, El Niño conditions are forecast with a high probability, specifically an 82% chance for May-July 2026, which is projected to increase to 96% by December 2026 – February 2027 [^][^]. Although the current ENSO status is neutral, models indicate a transition to El Niño by June 2026, potentially reaching moderate to strong intensity [^][^][^][^]. The specific temperature forecast for Boston on June 2, 2026, is 74°F (23°C) [^]. This prediction is slightly above the historical 1991-2020 June 2nd average high of 72.0°F [^].
7. What high-frequency datasets, like hourly wind direction at Logan Airport (KBOS) versus inland stations, will be available to track the onset and strength of the sea breeze on June 2, 2026?
| Sea breeze tracking date | June 2, 2026 (monitoring wind direction and temperature at KBOS and inland stations) [^] |
|---|---|
| ASOS data frequency | 1-minute and 5-minute data (archived in Global Surface Hourly/ISD ecosystem) [^][^][^] |
| ISD station coverage | Over 20,000 stations (aggregating hourly and synoptic surface observations) [^] |
High-frequency data from ASOS and NWS will track sea breeze. To monitor the onset and strength of the sea breeze at Logan Airport (KBOS) on June 2, 2026, primary reliance will be placed on the NOAA Automated Surface Observing System (ASOS) network. This network continuously collects 1-minute and 5-minute data for wind direction and temperature, archiving them within the Global Surface Hourly/Integrated Surface Database (ISD) ecosystem [^][^][^]. Additionally, the National Weather Service (NWS) Western Region Headquarters (WRH) “Time Series Viewer” supports an hourly view specifically for KBOS, providing accessible localized data [^][^][^].
Inland stations and broader networks provide comparative hourly data. For detailed analysis and comparison with inland ASOS stations, the Iowa Environmental Mesonet (IEM) ASOS One-Minute Data Download allows for selecting specific variables like Wind Direction and Wind Speed and filtering data to relevant intervals [^]. Complementing ASOS, NCEI’s Global Historical Climatology Network hourly (GHCNh) provides hourly land-station observations, including wind direction, wind speed, and temperature, compiled into unique station files suitable for comparing sea-breeze timing across multiple locations [^]. Furthermore, NCEI’s Integrated Surface Database (ISD) aggregates hourly and synoptic surface observations from over 20,000 stations, offering supplementary data for wind direction, wind speed, and temperature, which is particularly useful where local ASOS stations may be sparse [^]. It is important to note that NOAA/NWS marine products offer marine wind guidance for the Boston region as forecasts, serving as a complement rather than a substitute for hourly station wind direction in directly detecting sea-breeze onset [^].
8. Which large-scale atmospheric patterns, like the position of the jet stream or the strength of the Bermuda High, will be the key determinants for an early June 2026 heatwave versus a cool spell in Boston?
| Primary Atmospheric Pattern | Persistent, slow-evolving, and blocky 500 hPa trough (early June 2026) [^][^][^] |
|---|---|
| Current Temperature Conditions | Cooler-than-normal temperatures and periodic precipitation [^][^][^] |
| Bermuda High Status | Absence of a robust Bermuda High [^][^][^] |
Boston currently experiences cooler temperatures due to a persistent atmospheric trough. As of early June 2026, the atmospheric pattern over the northeastern United States, including Boston, is characterized by a persistent, slow-evolving, and blocky 500 hPa trough [^][^][^]. This configuration has led to cooler-than-normal temperatures and periodic precipitation in the region. The establishment of a robust Bermuda High, which typically brings warmer and more stable conditions, has been hindered by a deep upper-level trough and associated closed lows. This results in an E/NE onshore flow that suppresses temperatures along the Massachusetts coast [^][^].
Future temperature shifts depend critically on the path of offshore surface lows. Key determinants for potential temperature shifts in Boston during this period involve the progression of shortwave troughs within the broad cyclonic flow and the track of a surface low offshore [^][^][^]. The specific path of such a surface low is critical; it could facilitate temporary warming if it passes sufficiently south, or it could maintain cooler conditions if it tracks closer to the coast [^][^][^].
9. Based on historical data from Logan Airport for June 2, what is the actual frequency of daily high temperatures exceeding 77°F, and how does this compare to the market's implied probability?
| Historical Temperature Frequency | Cannot be determined for June 2 exceeding 77F [^] |
|---|---|
| Market Prediction Odds | Not found for June 2, 2026 highest temperature [^][^] |
| NOAA Station Record Period | 1936-01-01 to 2026-05-02 (NOAA CDO station details) [^] |
Historical frequency of June 2 high temperatures exceeding 77°F is unknown. The actual frequency of daily high temperatures surpassing 77°F at Logan Airport for June 2 cannot be determined from the provided information. Although the Boston Logan NOAA station (USW00014739) maintains extensive records spanning from January 1, 1936, to May 2, 2026, the available sources do not include a pre-compiled historical table or count specifically for June 2 daily highs exceeding 77°F [^].
Comparing historical data to a market probability is currently not possible. Furthermore, a comparison between this historical data and any market's implied probability cannot be made. No retrieved sources contain the necessary prediction-market prices or odds for the specific question concerning the highest temperature in Boston on June 2, 2026 [^][^]. Consequently, the market-implied probability for temperatures exceeding 77°F cannot be calculated from the current evidence [^][^].
10. What Could Change the Odds
Key Catalysts
Several key economic reports are expected in early June 2026, which could impact market probabilities. On June 2, 2026, JOLTS Job Openings [^][^] and the Paychex Small Business Employment Watch [^] will provide labor market insights, along with Domestic Vehicle Sales–May [^]. June 3, 2026, will see the release of the ADP Employment Report [^][^][^], ISM Non-Manufacturing Composite [^][^], Factory Orders [^], Durable Goods Orders (Final) [^], and the Federal Reserve's Beige Book [^]. Later in the month, the Employment Report (Non-Farm Payrolls) is due on June 5, 2026 [^][^], followed by the Consumer Price Index (CPI) on June 10, 2026 [^][^], and the Producer Price Index (PPI) on June 11, 2026 [^][^]. The Fed Chair's press conference is also closely watched [^][^], with Kevin Warsh expected to debut as chair [^].
On the bullish side, strong corporate earnings from the first-quarter 2026 earnings season, particularly in the technology sector, have fueled investor optimism and pushed the S&P 500 to record highs [^] [^] [^] . Significant investment in artificial intelligence (AI) infrastructure, with hyperscaler capital expenditure projected to reach $720 billion in 2026, is seen as a powerful driver of economic growth [^][^][^]. Hopes for a deal to end the war in Iran could ease geopolitical risks [^][^][^], and the economy is expanding at a solid pace, with growth on track to reach 2.4% in 2026 [^].
However, potential concerns include declining consumer sentiment due to rising prices and gasoline costs [^] [^] [^] , and discussions about market overextension or "bubble" conditions following the strong rally in semiconductor and AI-related stocks [^] [^] . A predicted surge in high-valuation IPOs could also indicate speculative excess [^], and the Federal Reserve is becoming more hawkish [^], with markets pricing in potential interest rate hikes [^][^][^].
Key Dates & Catalysts
- Strike Date: June 03, 2026
- Expiration: June 09, 2026
- Closes: June 03, 2026
11. Decision-Flipping Events
- Trigger: Several key economic reports are expected in early June 2026, which could impact market probabilities.
- Trigger: On June 2, 2026, JOLTS Job Openings [^] [^] and the Paychex Small Business Employment Watch [^] will provide labor market insights, along with Domestic Vehicle Sales–May [^] .
- Trigger: June 3, 2026, will see the release of the ADP Employment Report [^] [^] [^] , ISM Non-Manufacturing Composite [^] [^] , Factory Orders [^] , Durable Goods Orders (Final) [^] , and the Federal Reserve's Beige Book [^] .
- Trigger: Later in the month, the Employment Report (Non-Farm Payrolls) is due on June 5, 2026 [^] [^] , followed by the Consumer Price Index (CPI) on June 10, 2026 [^] [^] , and the Producer Price Index (PPI) on June 11, 2026 [^] [^] .
13. Historical Resolutions
Historical Resolutions: 20 markets in this series
Outcomes: 3 resolved YES, 17 resolved NO
Recent resolutions:
- KXHIGHTBOS-26JUN01-T64: NO (Jun 02, 2026)
- KXHIGHTBOS-26JUN01-T57: NO (Jun 02, 2026)
- KXHIGHTBOS-26JUN01-B63.5: NO (Jun 02, 2026)
- KXHIGHTBOS-26JUN01-B61.5: NO (Jun 02, 2026)
- KXHIGHTBOS-26JUN01-B59.5: NO (Jun 02, 2026)
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