Recent National Weather Service and model guidance points to overnight lows in the upper 70s for Miami on September 18, driven by persistent easterly flow, elevated humidity, and scattered showers that limit radiational cooling under cloudy skies. This typical late-summer pattern keeps minimum temperatures near the long-term average of 76.8°F, with forecast consensus favoring 78–79°F or 76–77°F as the most probable overnight readings. Thunderstorm timing and any breaks in cloud cover remain the key variables that could nudge the actual low slightly lower or hold it higher. Updated NWS and NOAA model runs over the next 48 hours will provide the final observational constraints ahead of market 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 18?
Lowest temperature in Miami on September 18?
78-79°F 34%
76-77°F 32%
74-75°F 19%
80-81°F 19%
NEW
NEW
Sep 18, 2026
69°F or below
5%
70-71°F
7%
72-73°F
11%
74-75°F
19%
76-77°F
32%
78-79°F
34%
80-81°F
19%
82-83°F
11%
84-85°F
7%
86-87°F
1%
88°F or higher
1%
78-79°F 34%
76-77°F 32%
74-75°F 19%
80-81°F 19%
NEW
NEW
Sep 18, 2026
69°F or below
$0 Vol.
5%
70-71°F
$0 Vol.
7%
72-73°F
$0 Vol.
11%
74-75°F
$0 Vol.
19%
76-77°F
$84 Vol.
32%
78-79°F
$89 Vol.
34%
80-81°F
$0 Vol.
19%
82-83°F
$0 Vol.
11%
84-85°F
$0 Vol.
7%
86-87°F
$11 Vol.
1%
88°F or higher
$11 Vol.
1%
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
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.Recent National Weather Service and model guidance points to overnight lows in the upper 70s for Miami on September 18, driven by persistent easterly flow, elevated humidity, and scattered showers that limit radiational cooling under cloudy skies. This typical late-summer pattern keeps minimum temperatures near the long-term average of 76.8°F, with forecast consensus favoring 78–79°F or 76–77°F as the most probable overnight readings. Thunderstorm timing and any breaks in cloud cover remain the key variables that could nudge the actual low slightly lower or hold it higher. Updated NWS and NOAA model runs over the next 48 hours will provide the final observational constraints ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
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.
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 16, 2026, 3:29 AM ET
Volume
$195End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
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.Recent National Weather Service and model guidance points to overnight lows in the upper 70s for Miami on September 18, driven by persistent easterly flow, elevated humidity, and scattered showers that limit radiational cooling under cloudy skies. This typical late-summer pattern keeps minimum temperatures near the long-term average of 76.8°F, with forecast consensus favoring 78–79°F or 76–77°F as the most probable overnight readings. Thunderstorm timing and any breaks in cloud cover remain the key variables that could nudge the actual low slightly lower or hold it higher. Updated NWS and NOAA model runs over the next 48 hours will provide the final observational constraints ahead of market resolution.
This market will resolve to the temperature range that contains the lowest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 18 Sep '26.
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.
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.
Volume
$195End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...Recent National Weather Service and model guidance points to overnight lows in the upper 70s for Miami on September 18, driven by persistent easterly flow, elevated humidity, and scattered showers that limit radiational cooling under cloudy skies. This typical late-summer pattern keeps minimum temperatures near the long-term average of 76.8°F, with forecast consensus favoring 78–79°F or 76–77°F as the most probable overnight readings. Thunderstorm timing and any breaks in cloud cover remain the key variables that could nudge the actual low slightly lower or hold it higher. Updated NWS and NOAA model runs over the next 48 hours will provide the final observational constraints ahead of market 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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