Latest National Weather Service model runs point to a daily high near 90°F in Dallas on May 18 under southerly flow that advects warm, moist air northward ahead of a weak frontal boundary. Afternoon cloud cover and scattered thunderstorms could cap surface heating, keeping the peak in the upper 80s for some ensemble members while clearer intervals allow readings to reach the low 90s. This narrow spread between 88–89°F and 90–91°F outcomes reflects the sensitivity of maximum temperature to the exact timing of convective initiation and boundary-layer moisture, both of which remain the primary uncertainties in the 24-hour forecast window. Historical May climatology for the Dallas–Fort Worth area shows mean highs around 85°F, providing context for the current above-normal signal.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Dallas on May 18?
88-89°F 35%
90-91°F 33%
86-87°F 18%
92°F or higher 14%
$10,901 Vol.
$10,901 Vol.
73°F or below
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
<1%
82-83°F
<1%
84-85°F
2%
86-87°F
18%
88-89°F
35%
90-91°F
33%
92°F or higher
14%
88-89°F 35%
90-91°F 33%
86-87°F 18%
92°F or higher 14%
$10,901 Vol.
$10,901 Vol.
73°F or below
<1%
74-75°F
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
<1%
82-83°F
<1%
84-85°F
2%
86-87°F
18%
88-89°F
35%
90-91°F
33%
92°F or higher
14%
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 Dallas Love Field Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/dallas/KDAL.
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, 12:04 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/tx/dallas/KDALThe 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 Dallas Love Field Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/tx/dallas/KDAL.
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.
Resolution Source
https://www.wunderground.com/history/daily/us/tx/dallas/KDALLatest National Weather Service model runs point to a daily high near 90°F in Dallas on May 18 under southerly flow that advects warm, moist air northward ahead of a weak frontal boundary. Afternoon cloud cover and scattered thunderstorms could cap surface heating, keeping the peak in the upper 80s for some ensemble members while clearer intervals allow readings to reach the low 90s. This narrow spread between 88–89°F and 90–91°F outcomes reflects the sensitivity of maximum temperature to the exact timing of convective initiation and boundary-layer moisture, both of which remain the primary uncertainties in the 24-hour forecast window. Historical May climatology for the Dallas–Fort Worth area shows mean highs around 85°F, providing context for the current above-normal signal.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions