Persistent thunderstorm activity driven by high atmospheric moisture and sea breeze convergence is anchoring trader consensus around 90-91°F as the most likely daily maximum for Miami on September 20. National Weather Service guidance and ensemble models currently project highs in the upper 80s amid scattered afternoon convection, consistent with September climatology where average highs reach near 89°F but frequent storms often suppress peaks. Elevated dew points near 77°F and 60-90% precipitation probabilities limit surface heating, while steering patterns favor continued instability. Recent model runs show minimal day-to-day shifts, leaving room for brief clearing that could push readings into the low 90s.
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 September 20?
Highest temperature in Miami on September 20?
90-91°F 42%
86-87°F 25%
88-89°F 25%
84-85°F 18%
NEW
NEW
Sep 20, 2026
77°F or below
5%
78-79°F
5%
80-81°F
6%
82-83°F
10%
84-85°F
18%
86-87°F
25%
88-89°F
25%
90-91°F
42%
92-93°F
12%
94-95°F
5%
96°F or higher
5%
90-91°F 42%
86-87°F 25%
88-89°F 25%
84-85°F 18%
NEW
NEW
Sep 20, 2026
77°F or below
$0 Vol.
5%
78-79°F
$0 Vol.
5%
80-81°F
$0 Vol.
6%
82-83°F
$0 Vol.
10%
84-85°F
$0 Vol.
18%
86-87°F
$141 Vol.
25%
88-89°F
$0 Vol.
25%
90-91°F
$694 Vol.
42%
92-93°F
$49 Vol.
12%
94-95°F
$0 Vol.
5%
96°F or higher
$0 Vol.
5%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 20 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Persistent thunderstorm activity driven by high atmospheric moisture and sea breeze convergence is anchoring trader consensus around 90-91°F as the most likely daily maximum for Miami on September 20. National Weather Service guidance and ensemble models currently project highs in the upper 80s amid scattered afternoon convection, consistent with September climatology where average highs reach near 89°F but frequent storms often suppress peaks. Elevated dew points near 77°F and 60-90% precipitation probabilities limit surface heating, while steering patterns favor continued instability. Recent model runs show minimal day-to-day shifts, leaving room for brief clearing that could push readings into the low 90s.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 20 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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 18, 2026, 2:56 AM ET
Volume
$884End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 20 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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.Persistent thunderstorm activity driven by high atmospheric moisture and sea breeze convergence is anchoring trader consensus around 90-91°F as the most likely daily maximum for Miami on September 20. National Weather Service guidance and ensemble models currently project highs in the upper 80s amid scattered afternoon convection, consistent with September climatology where average highs reach near 89°F but frequent storms often suppress peaks. Elevated dew points near 77°F and 60-90% precipitation probabilities limit surface heating, while steering patterns favor continued instability. Recent model runs show minimal day-to-day shifts, leaving room for brief clearing that could push readings into the low 90s.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Miami Intl Airport Station in degrees Fahrenheit on 20 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest 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 highest 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
$884End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 2:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...Persistent thunderstorm activity driven by high atmospheric moisture and sea breeze convergence is anchoring trader consensus around 90-91°F as the most likely daily maximum for Miami on September 20. National Weather Service guidance and ensemble models currently project highs in the upper 80s amid scattered afternoon convection, consistent with September climatology where average highs reach near 89°F but frequent storms often suppress peaks. Elevated dew points near 77°F and 60-90% precipitation probabilities limit surface heating, while steering patterns favor continued instability. Recent model runs show minimal day-to-day shifts, leaving room for brief clearing that could push readings into the low 90s.
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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