Kalshi's Denver market settles on the daily high at Denver International (KDEN), as the climate report CLIDEN and The Weather Company publish it. Series KXHIGHDEN, listed since Nov 20, 2024.
Updated Oct 30, 4:21 AM MDT: newest final official high is for Thu, Oct 29.
Denver International Airport
1:00 AM Oct 31 to 1:00 AM Nov 1 MDT
Midnight to midnight MST, local standard time: 1:00 AM to 1:00 AM on Denver's clock while daylight saving is on.
Today's six brackets, in whole degrees
Since Aug 14, 2026, 9 of 77 days (12%) settled on a tail bracket: 6 below the bottom bracket and 3 above the top one. In the last 30 days: 2 of 30.
| Day | Settled on | Winning bracket | Time of high (LST) | Settled at |
|---|---|---|---|---|
| Thu, Oct 29 | 66° | 65° to 66° | 2:19 PM | Oct 30, 7:12 AM MDT |
| Wed, Oct 28 | 66° | 65° to 66° | 2:19 PM | Oct 29, 7:08 AM MDT |
| Tue, Oct 27 | 64° | 64° or belowbottom tail | 1:49 PM | Oct 28, 7:07 AM MDT |
| Mon, Oct 26 | 54° | 58° or belowbottom tail | 3:13 PM | Oct 27, 7:08 AM MDT |
| Sun, Oct 25 | 58° | 58° to 59° | 2:50 PM | Oct 26, 7:08 AM MDT |
| Sat, Oct 24 | 57° | 57° to 58° | 12:34 AM | Oct 25, 7:07 AM MDT |
| Fri, Oct 23 | 77° | 76° to 77° | 2:20 PM | Oct 24, 7:08 AM MDT |
| Thu, Oct 22 | 74° | 73° to 74° | 3:29 PM | Oct 23, 7:08 AM MDT |
| Wed, Oct 21 | 75° | 74° to 75° | 2:21 PM | Oct 22, 7:08 AM MDT |
| Tue, Oct 20 | 73° | 72° to 73° | 3:14 PM | Oct 21, 7:07 AM MDT |
| Mon, Oct 19 | 71° | 71° to 72° | 3:49 PM | Oct 20, 7:08 AM MDT |
| Sun, Oct 18 | 75° | 74° to 75° | 2:52 PM | Oct 19, 7:08 AM MDT |
| Sat, Oct 17 | 78° | 77° to 78° | 3:38 PM | Oct 18, 7:08 AM MDT |
| Fri, Oct 16 | 57° | 57° to 58° | 3:02 PM | Oct 17, 7:08 AM MDT |
| Thu, Oct 15 | 54° | 53° to 54° | 3:03 PM | Oct 16, 7:08 AM MDT |
| Wed, Oct 14 | 48° | 48° to 49° | 12:07 AM | Oct 15, 7:08 AM MDT |
| Tue, Oct 13 | 66° | 66° to 67° | 3:21 PM | Oct 14, 7:08 AM MDT |
| Mon, Oct 12 | 82° | 81° to 82° | 2:41 PM | Oct 13, 7:07 AM MDT |
| Sun, Oct 11 | 85° | 84° to 85° | 2:09 PM | Oct 12, 7:12 AM MDT |
| Sat, Oct 10 | 83° | 82° to 83° | 2:14 PM | Oct 11, 7:07 AM MDT |
| Fri, Oct 9 | 86° | 86° to 87° | 3:01 PM | Oct 10, 7:07 AM MDT |
| Thu, Oct 8 | 84° | 83° to 84° | 3:22 PM | Oct 9, 7:08 AM MDT |
| Wed, Oct 7 | 81° | 80° to 81° | 2:57 PM | Oct 8, 7:12 AM MDT |
| Tue, Oct 6 | 87° | 86° to 87° | 2:07 PM | Oct 7, 7:08 AM MDT |
| Mon, Oct 5 | 87° | 87° to 88° | 3:21 PM | Oct 6, 7:09 AM MDT |
| Sun, Oct 4 | 81° | 80° to 81° | 4:02 PM | Oct 5, 7:13 AM MDT |
| Sat, Oct 3 | 83° | 83° to 84° | 1:33 PM | Oct 4, 7:09 AM MDT |
| Fri, Oct 2 | 81° | 81° to 82° | 2:07 PM | Oct 3, 7:09 AM MDT |
| Thu, Oct 1 | 70° | 70° to 71° | 1:52 PM | Oct 2, 7:09 AM MDT |
| Wed, Sep 30 | 64° | 63° to 64° | 1:50 PM | Oct 1, 7:09 AM MDT |
Source: Each market's result, settlement value and time: Kalshi's public market data; Time of the high: NWS climate reports for KDEN, via IEM
Over 353 days (Oct 30, 2025 to Oct 29, 2026), the median time of the official high was 2:43 PM local standard time, and half the highs came between 1:42 PM and 3:35 PM. Over the last 56 days the median was 2:57 PM.
Denver International's high came before 1 AM standard time (1 to 2 AM daylight time) on 9 of 353 days (3%): the climate day's warmest minutes were its first.
KDEN report times, standard time. 12 without a time (MM) left out.
Source: NWS climate reports for KDEN, via IEM; IEM table of NWS climate reports
Polymarket's Denver market settles on Buckley Space Force Base (KBKF), not Denver International (KDEN): the highest of its hourly readings in whole °F, over the local calendar day, in 2°F ranges. The two exchanges can settle the same day differently.
Kalshi vs Polymarket in Denver: the stations and the last 30 days side by side
On 183 days from May 1, 2026 to Oct 30, 2026, the NWS's afternoon preliminary report (usually "as of 5 PM" local time) had the same high as the final report on 180 of 183 days (98%). The final report came in higher on 3 and never lower.
Every one of those 3 higher finals put the high after the 5 PM cutoff.
Source: Every NWS climate report issued for KDEN (CLIDEN), via IEM's text archive
The normal high for Oct 31 is 59°F and the record high is 79°F. The normal falls to 47°F by Nov 30.
365 final highs at KDEN, Oct 30, 2025 to Oct 29, 2026, against the normal and record each report printed.
Source: NWS climate reports for KDEN, via IEM; NOAA NCEI U.S. Climate Normals
Climate-report stations near Denver International, and how their official highs ran against it. None settles the Denver market.
Other reporting stations within 25 km (METARs only, no climate report): Denver/Colorado Air and Space Port (KCFO, 11 km), Denver/Front Range Arpt (KFTG, 12 km), Buckley SFB (KBKF, 17 km).
Straight-line distances from KDEN; snapshot Oct 21, 2026.
Source: IEM's list of NWS climate-report sites; aviationweather.gov station information
Denver International Airport (KDEN), the station named by the climate-report code CLIDEN in the market's rules.
Midnight to midnight MST, local standard time. During daylight saving that is 1:00 AM Oct 31 to 1:00 AM Nov 1 MDT.
Trading closes at 1:00 AM MDT after the day ends. Over the last 77 settled days the result posted a median of 6.2 hours after close.
57° or below, 58° to 59°, 60° to 61°, 62° to 63°, 64° to 65°, 66° or above, compared with Denver International's published whole-degree high. The two tails are strict.
On 9 of 77 settled days from Aug 14, 2026 to Oct 29, 2026 (12%): 6 on the bottom tail and 3 on the top tail.
Over 353 days to Oct 29, 2026, the median time of the official high at KDEN was 2:43 PM local standard time. On 9 of those days it came before 1 AM standard time.
From May 1, 2026 to Oct 30, 2026, the afternoon preliminary report's high matched the final report's on 180 of 183 days. The final was higher on 3 and lower on 0.
The rules every city shares · Reading CLIDEN · The Aug 14, 2026 change
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