Persistent southerly flow from the Gulf of Mexico sustains warm, humid air masses over Houston, elevating overnight minimum temperatures through high dew points and limited radiational cooling under mostly clear to partly cloudy skies. Official forecasts from the National Weather Service and models project lows in the upper 70s to low 80s°F for September 12, consistent with seasonal norms near 73–74°F but boosted by ongoing tropical moisture and heat indices exceeding 100°F. The tight contest between 78–79°F and 80–81°F outcomes stems from subtle variations in wind patterns, cloud cover, and local urban heat effects that could shift the exact minimum by a degree or two. No incoming cold fronts or significant precipitation are expected to alter this trajectory before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Houston on September 12?
78-79°F 57%
80-81°F 45%
71°F or below 37%
90°F or higher 37%
71°F or below
37%
72-73°F
33%
74-75°F
34%
76-77°F
21%
78-79°F
41%
80-81°F
45%
82-83°F
33%
84-85°F
17%
86-87°F
17%
88-89°F
17%
90°F or higher
37%
78-79°F 57%
80-81°F 45%
71°F or below 37%
90°F or higher 37%
71°F or below
37%
72-73°F
33%
74-75°F
34%
76-77°F
21%
78-79°F
41%
80-81°F
45%
82-83°F
33%
84-85°F
17%
86-87°F
17%
88-89°F
17%
90°F or higher
37%
The resolution source for this market will be information from NOAA, specifically the lowest 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 10, 2026, 3:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=khouResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the lowest 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...Persistent southerly flow from the Gulf of Mexico sustains warm, humid air masses over Houston, elevating overnight minimum temperatures through high dew points and limited radiational cooling under mostly clear to partly cloudy skies. Official forecasts from the National Weather Service and models project lows in the upper 70s to low 80s°F for September 12, consistent with seasonal norms near 73–74°F but boosted by ongoing tropical moisture and heat indices exceeding 100°F. The tight contest between 78–79°F and 80–81°F outcomes stems from subtle variations in wind patterns, cloud cover, and local urban heat effects that could shift the exact minimum by a degree or two. No incoming cold fronts or significant precipitation are expected to alter this trajectory before 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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