Kalshi's Miami market settles on the daily high at Miami International (KMIA), as the climate report CLIMIA and The Weather Company publish it. Series KXHIGHMIA, listed since May 11, 2023.
Updated Oct 31, 4:20 AM EDT: newest final official high is for Fri, Oct 30.
Miami International Airport
1:00 AM Oct 31 to 1:00 AM Nov 1 EDT
Midnight to midnight EST, local standard time: 1:00 AM to 1:00 AM on Miami's clock while daylight saving is on.
Today's six brackets, in whole degrees
Since Aug 14, 2026, 0 of 77 days (0%) settled on a tail bracket: 0 below the bottom bracket and 0 above the top one. In the last 30 days: 0 of 30.
| Day | Settled on | Winning bracket | Time of high (LST) | Settled at |
|---|---|---|---|---|
| Thu, Oct 29 | 88° | 87° to 88° | 12:52 PM | Oct 30, 7:09 AM EDT |
| Wed, Oct 28 | 88° | 88° to 89° | 1:17 PM | Oct 29, 7:18 AM EDT |
| Tue, Oct 27 | 84° | 83° to 84° | 12:30 PM | Oct 28, 7:09 AM EDT |
| Mon, Oct 26 | 83° | 83° to 84° | 1:01 PM | Oct 27, 7:09 AM EDT |
| Sun, Oct 25 | 82° | 81° to 82° | 3:21 PM | Oct 26, 7:18 AM EDT |
| Sat, Oct 24 | 84° | 84° to 85° | 2:02 PM | Oct 25, 7:18 AM EDT |
| Fri, Oct 23 | 82° | 81° to 82° | 1:05 PM | Oct 24, 7:09 AM EDT |
| Thu, Oct 22 | 80° | 80° to 81° | 11:22 AM | Oct 23, 7:09 AM EDT |
| Wed, Oct 21 | 84° | 83° to 84° | 3:29 PM | Oct 22, 7:18 AM EDT |
| Tue, Oct 20 | 85° | 85° to 86° | 2:20 PM | Oct 21, 7:09 AM EDT |
| Mon, Oct 19 | 86° | 85° to 86° | 1:29 PM | Oct 20, 7:09 AM EDT |
| Sun, Oct 18 | 82° | 82° to 83° | 3:42 PM | Oct 19, 7:09 AM EDT |
| Sat, Oct 17 | 90° | 90° to 91° | 11:35 AM | Oct 18, 7:18 AM EDT |
| Fri, Oct 16 | 90° | 90° to 91° | 12:55 PM | Oct 17, 7:19 AM EDT |
| Thu, Oct 15 | 90° | 90° to 91° | 2:38 PM | Oct 16, 7:09 AM EDT |
| Wed, Oct 14 | 88° | 88° to 89° | 4:08 PM | Oct 15, 7:09 AM EDT |
| Tue, Oct 13 | 89° | 89° to 90° | 12:40 PM | Oct 14, 7:09 AM EDT |
| Mon, Oct 12 | 90° | 90° to 91° | 1:52 PM | Oct 13, 7:09 AM EDT |
| Sun, Oct 11 | 90° | 89° to 90° | 2:06 PM | Oct 12, 7:09 AM EDT |
| Sat, Oct 10 | 91° | 91° to 92° | 12:29 PM | Oct 11, 7:09 AM EDT |
| Fri, Oct 9 | 90° | 90° to 91° | 1:26 PM | Oct 10, 7:18 AM EDT |
| Thu, Oct 8 | 90° | 89° to 90° | 1:39 PM | Oct 9, 7:18 AM EDT |
| Wed, Oct 7 | 90° | 89° to 90° | 11:33 AM | Oct 8, 7:19 AM EDT |
| Tue, Oct 6 | 90° | 89° to 90° | 12:58 PM | Oct 7, 7:10 AM EDT |
| Mon, Oct 5 | 90° | 89° to 90° | 2:45 PM | Oct 6, 7:10 AM EDT |
| Sun, Oct 4 | 90° | 89° to 90° | 1:57 PM | Oct 5, 7:10 AM EDT |
| Sat, Oct 3 | 87° | 86° to 87° | 1:27 PM | Oct 4, 7:11 AM EDT |
| Fri, Oct 2 | 88° | 87° to 88° | 3:07 PM | Oct 3, 7:10 AM EDT |
| Thu, Oct 1 | 83° | 83° to 84° | 11:44 PM | Oct 2, 7:20 AM EDT |
| Wed, Sep 30 | 85° | 84° to 85° | 9:38 AM | Oct 1, 7:10 AM EDT |
Source: Each market's result, settlement value and time: Kalshi's public market data; Time of the high: NWS climate reports for KMIA, via IEM
Over 352 days (Oct 31, 2025 to Oct 30, 2026), the median time of the official high was 2:03 PM local standard time, and half the highs came between 12:52 PM and 2:57 PM. Over the last 59 days the median was 1:27 PM.
KMIA report times, standard time. 12 without a time (MM) left out.
Source: NWS climate reports for KMIA, via IEM; IEM table of NWS climate reports
Polymarket's Miami market settles on the same station, Miami Intl Airport (KMIA), but reads it its own way: the highest of the day's hourly readings in whole °F, over the local calendar day, in 2°F ranges.
Kalshi vs Polymarket in Miami: the stations and the last 30 days side by side
On 181 days from May 1, 2026 to Oct 29, 2026, the NWS's afternoon preliminary report (usually "as of 4 PM" local time) had the same high as the final report on 173 of 181 days (96%). The final report came in higher on 8 and never lower.
5 of those 8 higher finals put the high after the 4 PM cutoff.
On 1 daythe NWS sent a second final report with a different high. Kalshi's contract terms use the first one: Aug 29: 90°, then 85°.
Source: Every NWS climate report issued for KMIA (CLIMIA), via IEM's text archive
The normal high for Oct 31 is 84°F and the record high is 91°F. The normal falls to 80°F by Nov 30.
364 final highs at KMIA, Oct 31, 2025 to Oct 30, 2026, against the normal and record each report printed.
Source: NWS climate reports for KMIA, via IEM; NOAA NCEI U.S. Climate Normals
Climate-report stations near Miami International, and how their official highs ran against it. None settles the Miami market.
Other reporting stations within 25 km (METARs only, no climate report): Miami/Opa Locka Arpt (KOPF, 14 km), Miami Exec Arpt (KTMB, 20 km), Hollywood/North Perry Arpt (KHWO, 24 km).
Straight-line distances from KMIA; snapshot Oct 21, 2026.
Source: IEM's list of NWS climate-report sites; aviationweather.gov station information
Miami International Airport (KMIA), the station named by the climate-report code CLIMIA in the market's rules.
Midnight to midnight EST, local standard time. During daylight saving that is 1:00 AM Oct 31 to 1:00 AM Nov 1 EDT.
Trading closes at 1:00 AM EDT after the day ends. Over the last 77 settled days the result posted a median of 6.2 hours after close.
80° or below, 81° to 82°, 83° to 84°, 85° to 86°, 87° to 88°, 89° or above, compared with Miami International's published whole-degree high. The two tails are strict.
On 0 of 77 settled days from Aug 14, 2026 to Oct 29, 2026 (0%): 0 on the bottom tail and 0 on the top tail.
Over 352 days to Oct 30, 2026, the median time of the official high at KMIA was 2:03 PM local standard time. On 0 of those days it came before 1 AM standard time.
From May 1, 2026 to Oct 29, 2026, the afternoon preliminary report's high matched the final report's on 173 of 181 days. The final was higher on 8 and lower on 0.
The rules every city shares · Reading CLIMIA · The Aug 14, 2026 change
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