Recent National Weather Service and private model guidance points to an overnight low in Miami on September 9 near the upper 70s to low 80s, driven by persistent tropical moisture, high dew points above 78 °F, and scattered nocturnal convection under light easterly flow. These conditions limit radiative cooling typical of drier nights, keeping temperatures elevated relative to the 1991–2020 September average low of 77 °F. Market-implied odds cluster tightly around the 78–81 °F buckets because forecasters see limited scope for significant cooling or an unusual cold surge before the date. Traders weigh the risk of localized heavier rain or a brief clear spell that could allow a dip toward 76 °F or below, while noting that official Miami International Airport observations—used for resolution—will capture the final minimum between 6 p.m. on the 9th and 6 a.m. on the 10th.
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 9?
71°F or below 47%
76-77°F 42%
80-81°F 32%
78-79°F 32%
71°F or below
47%
72-73°F
17%
74-75°F
19%
76-77°F
42%
78-79°F
32%
80-81°F
32%
82-83°F
8%
84-85°F
15%
86-87°F
15%
88-89°F
2%
90°F or higher
2%
71°F or below 47%
76-77°F 42%
80-81°F 32%
78-79°F 32%
71°F or below
47%
72-73°F
17%
74-75°F
19%
76-77°F
42%
78-79°F
32%
80-81°F
32%
82-83°F
8%
84-85°F
15%
86-87°F
15%
88-89°F
2%
90°F or higher
2%
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 7, 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...Recent National Weather Service and private model guidance points to an overnight low in Miami on September 9 near the upper 70s to low 80s, driven by persistent tropical moisture, high dew points above 78 °F, and scattered nocturnal convection under light easterly flow. These conditions limit radiative cooling typical of drier nights, keeping temperatures elevated relative to the 1991–2020 September average low of 77 °F. Market-implied odds cluster tightly around the 78–81 °F buckets because forecasters see limited scope for significant cooling or an unusual cold surge before the date. Traders weigh the risk of localized heavier rain or a brief clear spell that could allow a dip toward 76 °F or below, while noting that official Miami International Airport observations—used for resolution—will capture the final minimum between 6 p.m. on the 9th and 6 a.m. on the 10th.
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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