National Weather Service forecasts and ensemble model guidance currently point to partly cloudy skies over Miami with daytime highs in the upper 80s, creating the tight market split between the 86–87°F and 88–89°F brackets. Typical May climatology features normal maximum temperatures near 86°F at Miami International Airport, with subtropical high pressure and Atlantic sea breezes often moderating peak values by a few degrees depending on timing and wind direction. Recent model runs show modest spread in afternoon heating due to variable cloud cover and moisture, keeping the leading outcomes closely matched while limiting probability for 90°F or higher. Official resolution will rely on the verified daily high from the Miami station.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Miami on May 17?
86-87°F 41%
88-89°F 34%
84-85°F 21%
82-83°F 5.1%
$58,181 Vol.
$58,181 Vol.
75°F or below
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
<1%
82-83°F
5%
84-85°F
21%
86-87°F
41%
88-89°F
34%
90-91°F
4%
92-93°F
1%
94°F or higher
<1%
86-87°F 41%
88-89°F 34%
84-85°F 21%
82-83°F 5.1%
$58,181 Vol.
$58,181 Vol.
75°F or below
<1%
76-77°F
<1%
78-79°F
<1%
80-81°F
<1%
82-83°F
5%
84-85°F
21%
86-87°F
41%
88-89°F
34%
90-91°F
4%
92-93°F
1%
94°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 Miami Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
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 15, 2026, 12:04 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAThe 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 Miami Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
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/fl/miami/KMIANational Weather Service forecasts and ensemble model guidance currently point to partly cloudy skies over Miami with daytime highs in the upper 80s, creating the tight market split between the 86–87°F and 88–89°F brackets. Typical May climatology features normal maximum temperatures near 86°F at Miami International Airport, with subtropical high pressure and Atlantic sea breezes often moderating peak values by a few degrees depending on timing and wind direction. Recent model runs show modest spread in afternoon heating due to variable cloud cover and moisture, keeping the leading outcomes closely matched while limiting probability for 90°F or higher. Official resolution will rely on the verified daily high from the Miami station.
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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