Recent National Weather Service forecasts for Atlanta on May 18 project a high in the mid-to-upper 80s under partly cloudy skies with a chance of afternoon thunderstorms, positioning 86–89°F as the market leaders. This stems from a warming trend after cooler mid-May readings, with daytime heating expected to peak near 87°F amid light southerly flow and dew points in the low 60s that limit extreme mixing. Subtle model differences in cloud timing and convective initiation explain the tight spread between 86–87°F and 88–89°F outcomes, while historical May averages near 85°F provide climatological context. Updated NWS guidance and short-range model runs over the next 48 hours will refine peak temperature expectations ahead of resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Atlanta on May 18?
86-87°F 37%
88-89°F 28%
90-91°F 13%
84-85°F 11%
79°F or below
<1%
80-81°F
1%
82-83°F
6%
84-85°F
11%
86-87°F
37%
88-89°F
28%
90-91°F
13%
92-93°F
3%
94-95°F
2%
96-97°F
1%
98°F or higher
<1%
86-87°F 37%
88-89°F 28%
90-91°F 13%
84-85°F 11%
79°F or below
<1%
80-81°F
1%
82-83°F
6%
84-85°F
11%
86-87°F
37%
88-89°F
28%
90-91°F
13%
92-93°F
3%
94-95°F
2%
96-97°F
1%
98°F or higher
<1%
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 Hartsfield-Jackson International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ga/atlanta/KATL.
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/ga/atlanta/KATLThe 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 Hartsfield-Jackson International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ga/atlanta/KATL.
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/ga/atlanta/KATLRecent National Weather Service forecasts for Atlanta on May 18 project a high in the mid-to-upper 80s under partly cloudy skies with a chance of afternoon thunderstorms, positioning 86–89°F as the market leaders. This stems from a warming trend after cooler mid-May readings, with daytime heating expected to peak near 87°F amid light southerly flow and dew points in the low 60s that limit extreme mixing. Subtle model differences in cloud timing and convective initiation explain the tight spread between 86–87°F and 88–89°F outcomes, while historical May averages near 85°F provide climatological context. Updated NWS guidance and short-range model runs over the next 48 hours will refine peak temperature expectations ahead of 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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