Persistent high pressure and a strong heat dome over the southern Plains are driving the current forecast for Houston, with National Weather Service guidance and local models projecting a high near 100°F on August 21 amid mostly sunny skies, light winds, and minimal rain chances. This setup aligns with trader emphasis on the 98–101°F range, reflecting typical late-August climatology (average highs near 94–95°F) plus the ongoing heat wave that has produced upper-90s to low-100 readings in recent days. Low-level moisture and potential sea-breeze timing remain the main variables that could nudge the official high slightly lower or higher, with the next model updates and afternoon observations likely to refine resolution probabilities.
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 August 21?
Highest temperature in Houston on August 21?
98-99°F 56%
100-101°F 29%
96-97°F 11%
102-103°F 6%
NEW
NEW
Aug 21, 2026
91°F or below
<1%
92-93°F
1%
94-95°F
3%
96-97°F
11%
98-99°F
56%
100-101°F
29%
102-103°F
6%
104-105°F
2%
106-107°F
1%
108-109°F
<1%
110°F or higher
<1%
98-99°F 56%
100-101°F 29%
96-97°F 11%
102-103°F 6%
NEW
NEW
Aug 21, 2026
91°F or below
$227 Vol.
<1%
92-93°F
$60 Vol.
1%
94-95°F
$148 Vol.
3%
96-97°F
$103 Vol.
11%
98-99°F
$377 Vol.
56%
100-101°F
$260 Vol.
29%
102-103°F
$61 Vol.
6%
104-105°F
$105 Vol.
2%
106-107°F
$67 Vol.
1%
108-109°F
$242 Vol.
<1%
110°F or higher
$282 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.Persistent high pressure and a strong heat dome over the southern Plains are driving the current forecast for Houston, with National Weather Service guidance and local models projecting a high near 100°F on August 21 amid mostly sunny skies, light winds, and minimal rain chances. This setup aligns with trader emphasis on the 98–101°F range, reflecting typical late-August climatology (average highs near 94–95°F) plus the ongoing heat wave that has produced upper-90s to low-100 readings in recent days. Low-level moisture and potential sea-breeze timing remain the main variables that could nudge the official high slightly lower or higher, with the next model updates and afternoon observations likely to refine resolution probabilities.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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: Aug 19, 2026, 9:57 PM ET
Volume
$1,932End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.Persistent high pressure and a strong heat dome over the southern Plains are driving the current forecast for Houston, with National Weather Service guidance and local models projecting a high near 100°F on August 21 amid mostly sunny skies, light winds, and minimal rain chances. This setup aligns with trader emphasis on the 98–101°F range, reflecting typical late-August climatology (average highs near 94–95°F) plus the ongoing heat wave that has produced upper-90s to low-100 readings in recent days. Low-level moisture and potential sea-breeze timing remain the main variables that could nudge the official high slightly lower or higher, with the next model updates and afternoon observations likely to refine resolution probabilities.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
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 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the William P. Hobby Airport Station, 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 until the first data point for the following date has been published on the resolution source.
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.
Volume
$1,932End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUResolver
0x69c47De9D...Persistent high pressure and a strong heat dome over the southern Plains are driving the current forecast for Houston, with National Weather Service guidance and local models projecting a high near 100°F on August 21 amid mostly sunny skies, light winds, and minimal rain chances. This setup aligns with trader emphasis on the 98–101°F range, reflecting typical late-August climatology (average highs near 94–95°F) plus the ongoing heat wave that has produced upper-90s to low-100 readings in recent days. Low-level moisture and potential sea-breeze timing remain the main variables that could nudge the official high slightly lower or higher, with the next model updates and afternoon observations likely to refine resolution probabilities.
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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