Official National Weather Service observations from Houston/Hobby Airport recorded a daily maximum of 91°F on September 5, 2026, reached in the mid-afternoon under partly cloudy skies with light southeast winds and isolated thunderstorms. This aligned precisely with the 1991–2020 climatological normal high of 91°F and fell well below historical extremes for the date, such as the 107°F record from 2000. Multiple airport stations and real-time reports converged on a 90–91°F peak, producing the market's near-certain 100% implied probability for that bin. Revisions to final quality-controlled data or substantial differences between primary stations could theoretically alter resolution, though such adjustments are rare once preliminary readings stabilize.
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 5?
90-91°F 100.0%
81°F or below <1%
82-83°F <1%
84-85°F <1%
$82,845 Vol.
$82,845 Vol.
81°F or below
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
Yes
92-93°F
No
94-95°F
No
96-97°F
No
98-99°F
No
100°F or higher
No
90-91°F 100.0%
81°F or below <1%
82-83°F <1%
84-85°F <1%
$82,845 Vol.
$82,845 Vol.
81°F or below
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
Yes
92-93°F
No
94-95°F
No
96-97°F
No
98-99°F
No
100°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 3, 2026, 2:56 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
Official National Weather Service observations from Houston/Hobby Airport recorded a daily maximum of 91°F on September 5, 2026, reached in the mid-afternoon under partly cloudy skies with light southeast winds and isolated thunderstorms. This aligned precisely with the 1991–2020 climatological normal high of 91°F and fell well below historical extremes for the date, such as the 107°F record from 2000. Multiple airport stations and real-time reports converged on a 90–91°F peak, producing the market's near-certain 100% implied probability for that bin. Revisions to final quality-controlled data or substantial differences between primary stations could theoretically alter resolution, though such adjustments are rare once preliminary readings stabilize.
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