Forecast models from the National Weather Service and private ensembles indicate Miami’s overnight low on September 25 will likely settle in the mid-70s, driven by typical late-September humidity, scattered afternoon convection, and a northerly wind shift that limits radiative cooling. Partly cloudy skies may allow modest heat loss after midnight, while lingering moisture and any evening showers could trap warmth near the surface, keeping readings closer to 76–78 °F. Historical September 25 lows average near 76.5 °F, providing a baseline traders weigh against current model consensus. The tight spread between 74–75 °F and 76–77 °F outcomes reflects uncertainty in boundary-layer mixing and exact shower timing, with new NWS updates expected to refine the range before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Miami on September 25?
76-77°F 36%
80-81°F 35%
82-83°F 34%
84-85°F 33%
67°F or below
1%
68-69°F
32%
70-71°F
32%
72-73°F
17%
74-75°F
27%
76-77°F
36%
78-79°F
24%
80-81°F
35%
82-83°F
34%
84-85°F
33%
86°F or higher
1%
76-77°F 36%
80-81°F 35%
82-83°F 34%
84-85°F 33%
67°F or below
1%
68-69°F
32%
70-71°F
32%
72-73°F
17%
74-75°F
27%
76-77°F
36%
78-79°F
24%
80-81°F
35%
82-83°F
34%
84-85°F
33%
86°F or higher
1%
The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kmia
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 23, 2026, 3:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the lowest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kmia
This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...Forecast models from the National Weather Service and private ensembles indicate Miami’s overnight low on September 25 will likely settle in the mid-70s, driven by typical late-September humidity, scattered afternoon convection, and a northerly wind shift that limits radiative cooling. Partly cloudy skies may allow modest heat loss after midnight, while lingering moisture and any evening showers could trap warmth near the surface, keeping readings closer to 76–78 °F. Historical September 25 lows average near 76.5 °F, providing a baseline traders weigh against current model consensus. The tight spread between 74–75 °F and 76–77 °F outcomes reflects uncertainty in boundary-layer mixing and exact shower timing, with new NWS updates expected to refine the range before 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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