National Weather Service forecasts for Houston project a high of 88°F tomorrow under mostly cloudy skies, with a 40% chance of afternoon showers and thunderstorms driven by southeast winds around 15 mph and gusts to 25 mph. This aligns closely with the historical normal high of 88°F for May 18, yet recent model runs indicate modest variability tied to the timing of instability and cloud cover that could cap peak readings in the mid-80s. Trader sentiment reflects this narrow range of outcomes, with implied probabilities clustering around 84–88°F as atmospheric moisture and convective development remain the primary uncertainties ahead of the final observation period.
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 May 18?
Highest temperature in Houston on May 18?
88°F or higher 45%
86-87°F 34%
84-85°F 20%
82-83°F 3.3%
NEW
NEW
May 18, 2026
69°F or below
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
1%
82-83°F
3%
84-85°F
20%
86-87°F
34%
88°F or higher
45%
88°F or higher 45%
86-87°F 34%
84-85°F 20%
82-83°F 3.3%
NEW
NEW
May 18, 2026
69°F or below
$320 Vol.
<1%
70-71°F
$656 Vol.
<1%
72-73°F
$1,418 Vol.
<1%
74-75°F
$1,184 Vol.
<1%
76-77°F
$1,507 Vol.
<1%
78-79°F
$1,169 Vol.
<1%
80-81°F
$530 Vol.
1%
82-83°F
$405 Vol.
3%
84-85°F
$681 Vol.
20%
86-87°F
$500 Vol.
34%
88°F or higher
$691 Vol.
45%
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 18 May '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.National Weather Service forecasts for Houston project a high of 88°F tomorrow under mostly cloudy skies, with a 40% chance of afternoon showers and thunderstorms driven by southeast winds around 15 mph and gusts to 25 mph. This aligns closely with the historical normal high of 88°F for May 18, yet recent model runs indicate modest variability tied to the timing of instability and cloud cover that could cap peak readings in the mid-80s. Trader sentiment reflects this narrow range of outcomes, with implied probabilities clustering around 84–88°F as atmospheric moisture and convective development remain the primary uncertainties ahead of the final observation period.
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 18 May '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: May 16, 2026, 12:05 AM ET
Volume
$8,874End Date
May 18, 2026Market Opened
May 16, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUThis market will resolve to the temperature range that contains the highest temperature recorded at the William P. Hobby Airport Station in degrees Fahrenheit on 18 May '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.National Weather Service forecasts for Houston project a high of 88°F tomorrow under mostly cloudy skies, with a 40% chance of afternoon showers and thunderstorms driven by southeast winds around 15 mph and gusts to 25 mph. This aligns closely with the historical normal high of 88°F for May 18, yet recent model runs indicate modest variability tied to the timing of instability and cloud cover that could cap peak readings in the mid-80s. Trader sentiment reflects this narrow range of outcomes, with implied probabilities clustering around 84–88°F as atmospheric moisture and convective development remain the primary uncertainties ahead of the final observation period.
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 18 May '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
$8,874End Date
May 18, 2026Market Opened
May 16, 2026, 12:05 AM ETResolution Source
https://www.wunderground.com/history/daily/us/tx/houston/KHOUNational Weather Service forecasts for Houston project a high of 88°F tomorrow under mostly cloudy skies, with a 40% chance of afternoon showers and thunderstorms driven by southeast winds around 15 mph and gusts to 25 mph. This aligns closely with the historical normal high of 88°F for May 18, yet recent model runs indicate modest variability tied to the timing of instability and cloud cover that could cap peak readings in the mid-80s. Trader sentiment reflects this narrow range of outcomes, with implied probabilities clustering around 84–88°F as atmospheric moisture and convective development remain the primary uncertainties ahead of the final observation period.
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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