**The market's near-certain positioning on a 92-93°F high for Houston on September 20 reflects the official station observation matching that narrow band, consistent with National Weather Service climatological data and real-time surface measurements.** Persistent high pressure, mostly sunny skies, and Gulf moisture kept conditions hot but prevented stronger heating or convective cooling that could have pushed readings higher or triggered a sharper drop. This aligns with the month's above-average warmth, where early-September averages ran several degrees above the 1991-2020 normal of roughly 88-89°F. Trader consensus, backed by capital at risk, aggregates these verified observations and model guidance into the dominant outcome. Only an unexpected station-specific anomaly, revised official report, or measurement error would realistically alter resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Houston on September 20?
92-93°F 100%
83°F or below <1%
84-85°F <1%
86-87°F <1%
$25,494 Vol.
$25,494 Vol.
83°F or below
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
No
92-93°F
Yes
94-95°F
No
96-97°F
No
98-99°F
No
100-101°F
No
102°F or higher
No
92-93°F 100%
83°F or below <1%
84-85°F <1%
86-87°F <1%
$25,494 Vol.
$25,494 Vol.
83°F or below
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
No
92-93°F
Yes
94-95°F
No
96-97°F
No
98-99°F
No
100-101°F
No
102°F or higher
No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=khou
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 18, 2026, 3:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=khouResolver
0x69c47de9d...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=khou
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=khouResolver
0x69c47de9d...Outcome proposed: No
No dispute
Final outcome: No
**The market's near-certain positioning on a 92-93°F high for Houston on September 20 reflects the official station observation matching that narrow band, consistent with National Weather Service climatological data and real-time surface measurements.** Persistent high pressure, mostly sunny skies, and Gulf moisture kept conditions hot but prevented stronger heating or convective cooling that could have pushed readings higher or triggered a sharper drop. This aligns with the month's above-average warmth, where early-September averages ran several degrees above the 1991-2020 normal of roughly 88-89°F. Trader consensus, backed by capital at risk, aggregates these verified observations and model guidance into the dominant outcome. Only an unexpected station-specific anomaly, revised official report, or measurement error would realistically alter resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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Frequently Asked Questions