Official National Weather Service observations at Houston's William P. Hobby Airport (KHOU)—the market's designated resolution source—recorded a maximum temperature of 68°F on April 21, 2026, driving the 100% market-implied probability for the 68-69°F outcome. Persistent cloud cover, light rain totaling 0.2 inches, and fog from an active stormy weather pattern ushered in cooler air masses, capping highs 12°F below the climatological April average of 80°F. This aligns with NOAA forecast models anticipating suppressed temperatures amid upper-level troughing and Gulf moisture influx. While final data revisions are rare post-validation, discrepancies between stations like IAH or microscale urban heat effects could theoretically prompt review, though trader consensus deems this outcome certain.
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 April 21?
Highest temperature in Houston on April 21?
68-69°F 100.0%
53°F or below <1%
54-55°F <1%
56-57°F <1%
$58,156 Vol.
$58,156 Vol.
Apr 21, 2026
53°F or below
No
54-55°F
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
Yes
70-71°F
No
72°F or higher
No
68-69°F 100.0%
53°F or below <1%
54-55°F <1%
56-57°F <1%
$58,156 Vol.
$58,156 Vol.
Apr 21, 2026
53°F or below
$846 Vol.
No
54-55°F
$939 Vol.
No
56-57°F
$734 Vol.
No
58-59°F
$1,269 Vol.
No
60-61°F
$1,863 Vol.
No
62-63°F
$2,531 Vol.
No
64-65°F
$5,246 Vol.
No
66-67°F
$10,713 Vol.
No
68-69°F
$14,597 Vol.
Yes
70-71°F
$8,725 Vol.
No
72°F or higher
$10,693 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the William P. Hobby Airport Station in degrees Fahrenheit on 21 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Official National Weather Service observations at Houston's William P. Hobby Airport (KHOU)—the market's designated resolution source—recorded a maximum temperature of 68°F on April 21, 2026, driving the 100% market-implied probability for the 68-69°F outcome. Persistent cloud cover, light rain totaling 0.2 inches, and fog from an active stormy weather pattern ushered in cooler air masses, capping highs 12°F below the climatological April average of 80°F. This aligns with NOAA forecast models anticipating suppressed temperatures amid upper-level troughing and Gulf moisture influx. While final data revisions are rare post-validation, discrepancies between stations like IAH or microscale urban heat effects could theoretically prompt review, though trader consensus deems this outcome certain.
This market will resolve to the temperature range that contains the highest temperature recorded at the William P. Hobby Airport Station in degrees Fahrenheit on 21 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 19, 2026, 12:13 AM ET
Volume
$58,156End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:13 AM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the William P. Hobby Airport Station in degrees Fahrenheit on 21 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Official National Weather Service observations at Houston's William P. Hobby Airport (KHOU)—the market's designated resolution source—recorded a maximum temperature of 68°F on April 21, 2026, driving the 100% market-implied probability for the 68-69°F outcome. Persistent cloud cover, light rain totaling 0.2 inches, and fog from an active stormy weather pattern ushered in cooler air masses, capping highs 12°F below the climatological April average of 80°F. This aligns with NOAA forecast models anticipating suppressed temperatures amid upper-level troughing and Gulf moisture influx. While final data revisions are rare post-validation, discrepancies between stations like IAH or microscale urban heat effects could theoretically prompt review, though trader consensus deems this outcome certain.
This market will resolve to the temperature range that contains the highest temperature recorded at the William P. Hobby Airport Station in degrees Fahrenheit on 21 Apr '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the William P. Hobby Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/houston/KHOU.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$58,156End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:13 AM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official National Weather Service observations at Houston's William P. Hobby Airport (KHOU)—the market's designated resolution source—recorded a maximum temperature of 68°F on April 21, 2026, driving the 100% market-implied probability for the 68-69°F outcome. Persistent cloud cover, light rain totaling 0.2 inches, and fog from an active stormy weather pattern ushered in cooler air masses, capping highs 12°F below the climatological April average of 80°F. This aligns with NOAA forecast models anticipating suppressed temperatures amid upper-level troughing and Gulf moisture influx. While final data revisions are rare post-validation, discrepancies between stations like IAH or microscale urban heat effects could theoretically prompt review, though trader consensus deems this outcome certain.
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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