Persistent high pressure over central Texas sustained above-normal warmth into early September 2026, with National Weather Service observations at Austin Bergstrom recording a maximum of 100°F on September 9 amid clear skies and light winds. Forecast model consensus from NOAA and local meteorological guidance projected daily highs of 98–99°F, aligning with the 8°F departure above the 1991–2020 normal of 92°F and consistent with a multi-day stretch of near- or above-100°F readings across the region. This strong scientific consensus, backed by surface observations and stable atmospheric conditions, drove the market-implied 100% probability on the 98–99°F outcome. Realistic challenges would require significant forecast revisions from unexpected convective development, increased cloud cover reducing insolation, or measurement adjustments at the official station, though such shifts remained low-probability given the verified synoptic pattern.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Austin on September 9?
98-99°F 100.0%
87°F or below <1%
88-89°F <1%
90-91°F <1%
$44,976 Vol.
$44,976 Vol.
87°F or below
No
88-89°F
No
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98-99°F
Yes
100-101°F
No
102-103°F
No
104-105°F
No
106°F or higher
No
98-99°F 100.0%
87°F or below <1%
88-89°F <1%
90-91°F <1%
$44,976 Vol.
$44,976 Vol.
87°F or below
No
88-89°F
No
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98-99°F
Yes
100-101°F
No
102-103°F
No
104-105°F
No
106°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=kaus
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 7, 2026, 3:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kausResolver
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=kaus
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=kausResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Persistent high pressure over central Texas sustained above-normal warmth into early September 2026, with National Weather Service observations at Austin Bergstrom recording a maximum of 100°F on September 9 amid clear skies and light winds. Forecast model consensus from NOAA and local meteorological guidance projected daily highs of 98–99°F, aligning with the 8°F departure above the 1991–2020 normal of 92°F and consistent with a multi-day stretch of near- or above-100°F readings across the region. This strong scientific consensus, backed by surface observations and stable atmospheric conditions, drove the market-implied 100% probability on the 98–99°F outcome. Realistic challenges would require significant forecast revisions from unexpected convective development, increased cloud cover reducing insolation, or measurement adjustments at the official station, though such shifts remained low-probability given the verified synoptic pattern.
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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