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$134b

24H VOL:

$107,351,958

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,416,970,024

400,720

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30,097

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MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

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Highest temperature in Boston on Jun 12, 2026?
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Highest temperature in Boston on Jun 12, 2026?

Volume:
$73,307

88° to 89°

 - Kalshi

88° to 89° - Kalshi

1W

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Positive

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Vol.

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Resolved Jun 13, 2026

Closed: Jun 13, 1:00 AM EST

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Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

88° to 89°

View
100%
Yes 100¢No 0¢
100¢
N/A
$20,513
N/A
N/A
$8,084
Settled
Yes
kalshi

87° or below

0%
Yes 0¢No 100¢
100¢
N/A
$26,230
N/A
N/A
$13,771
Settled
No
kalshi

90° to 91°

0%
Yes 0¢No 100¢
100¢
N/A
$13,454
N/A
N/A
$6,413
Settled
No
kalshi

92° to 93°

0%
Yes 0¢No 100¢
100¢
N/A
$6,195
N/A
N/A
$3,479
Settled
No
kalshi

94° to 95°

0%
Yes 0¢No 100¢
100¢
N/A
$3,479
N/A
N/A
$2,491
Settled
No
kalshi

96° or above

0%
Yes 0¢No 100¢
100¢
N/A
$3,436
N/A
N/A
$2,712
Settled
No
Total markets: 6

Description

This event forecasts the peak temperature in Boston on June 12, 2026. Traders predict which temperature range the day will reach, based on official National Weather Service measurements from Boston Logan Airport.

Kalshi

Resolution is determined by the maximum temperature recorded at Boston on June 12, 2026, as reported by the National Weather Service's Climatological Report (Daily) for Boston (Logan Airport), MA. The official data source is accessed via the NWS website at https://www.weather.gov/wrh/climate?wfo=box under the Observed Weather tab. Temperature ranges are: 87°F or below, 88-89°F, 90-91°F, 92-93°F, 94-95°F, and 96°F or above. The NWS Climatological Report (Daily) is the authoritative source for resolution; preliminary data and third-party weather services are for reference only. Traders should be aware that preliminary NWS reporting and measurement methods may involve rounding and conversion nuances that could affect final determination.

Frequently asked questions

On Kalshi, the Boston temperature market dashboard tracks real-time odds and historical price movements for predictions on the highest temperature in Boston on June 12, 2026. The interface displays current market pricing, cumulative trading volume of $73,307, and 24-hour activity at $59,608. Traders use this data to monitor how sentiment shifts as the event date approaches. The dashboard also shows the distribution of outcome probabilities, helping participants gauge consensus expectations around temperature thresholds for that specific day.

Prediction market odds reflect real-time trader consensus and often diverge from traditional weather forecasts or analyst models. While meteorologists rely on atmospheric data and historical patterns, this market aggregates the collective judgment of participants with financial incentives to predict accurately. Comparing odds here to published forecasts from the National Weather Service or other meteorological bodies can reveal where traders see upside or downside risk. Such gaps sometimes signal emerging data or market inefficiencies worth monitoring as the resolution date draws closer.

On Kalshi, this market is priced through an order-book mechanism where buyers and sellers submit bids and asks for different temperature outcomes. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Prices move continuously as new trades execute, reflecting updated expectations about June 12 conditions in Boston. Each outcome contract trades independently, and the implied probability of any given temperature range is derived from its current market price. Liquidity and trading volume directly influence how quickly prices adjust to new information.

This market resolves around Jun 13, 2026, once June 12, 2026 has passed and the day's highest temperature in Boston is verifiable from credible public sources. The outcome is determined by the actual recorded high temperature on that date, confirmed through established meteorological reporting. Traders holding contracts aligned with the final temperature outcome receive their payouts after verification. Until resolution, prices may continue to shift based on updated forecasts and real-time weather developments.

Several factors could shift odds in this market before resolution. Updated seasonal forecasts, climate pattern shifts, or anomalous weather systems developing weeks or days before June 12 may trigger repricing. Major atmospheric events—such as heat waves, cold fronts, or unusual jet-stream behavior—often prompt rapid trader response. Additionally, historical temperature records for that date and time-of-year comparisons serve as anchors; any new data suggesting deviation from the norm can drive trading activity and price changes.