Official observations from the National Weather Service at Miami International Airport recorded a minimum temperature of 76°F on September 21, 2026, aligning precisely with the 76-77°F bin and driving the near-certain market-implied odds. This reading, taken at 6:44 AM amid partly cloudy conditions with light southerly winds, matched climatological expectations for the date (normal low around 77°F) and recent model consensus showing limited overnight cooling under humid, stable air masses. Historical analogs and NOAA data confirm such values occur frequently in late September without strong frontal passages or clear-sky radiational cooling. The 0.1% odds on 74-75°F reflect the low probability of measurement revisions or alternate station discrepancies, though an official data correction or use of a different reporting site could theoretically alter 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 21?
Lowest temperature in Miami on September 21?
76-77°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$9,929 Vol.
$9,929 Vol.
Sep 21, 2026
69°F or below
No
70-71°F
No
72-73°F
No
74-75°F
No
76-77°F
Yes
78-79°F
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88°F or higher
No
76-77°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$9,929 Vol.
$9,929 Vol.
Sep 21, 2026
69°F or below
$252 Vol.
No
70-71°F
$334 Vol.
No
72-73°F
$267 Vol.
No
74-75°F
$816 Vol.
No
76-77°F
$3,752 Vol.
Yes
78-79°F
$1,484 Vol.
No
80-81°F
$145 Vol.
No
82-83°F
$0 Vol.
No
84-85°F
$130 Vol.
No
86-87°F
$1,635 Vol.
No
88°F or higher
$1,115 Vol.
No
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 21 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.Official observations from the National Weather Service at Miami International Airport recorded a minimum temperature of 76°F on September 21, 2026, aligning precisely with the 76-77°F bin and driving the near-certain market-implied odds. This reading, taken at 6:44 AM amid partly cloudy conditions with light southerly winds, matched climatological expectations for the date (normal low around 77°F) and recent model consensus showing limited overnight cooling under humid, stable air masses. Historical analogs and NOAA data confirm such values occur frequently in late September without strong frontal passages or clear-sky radiational cooling. The 0.1% odds on 74-75°F reflect the low probability of measurement revisions or alternate station discrepancies, though an official data correction or use of a different reporting site could theoretically alter 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 21 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 19, 2026, 3:29 AM ET
Volume
$9,929End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 21 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.Official observations from the National Weather Service at Miami International Airport recorded a minimum temperature of 76°F on September 21, 2026, aligning precisely with the 76-77°F bin and driving the near-certain market-implied odds. This reading, taken at 6:44 AM amid partly cloudy conditions with light southerly winds, matched climatological expectations for the date (normal low around 77°F) and recent model consensus showing limited overnight cooling under humid, stable air masses. Historical analogs and NOAA data confirm such values occur frequently in late September without strong frontal passages or clear-sky radiational cooling. The 0.1% odds on 74-75°F reflect the low probability of measurement revisions or alternate station discrepancies, though an official data correction or use of a different reporting site could theoretically alter 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 21 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
$9,929End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 3:29 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kmiaResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from the National Weather Service at Miami International Airport recorded a minimum temperature of 76°F on September 21, 2026, aligning precisely with the 76-77°F bin and driving the near-certain market-implied odds. This reading, taken at 6:44 AM amid partly cloudy conditions with light southerly winds, matched climatological expectations for the date (normal low around 77°F) and recent model consensus showing limited overnight cooling under humid, stable air masses. Historical analogs and NOAA data confirm such values occur frequently in late September without strong frontal passages or clear-sky radiational cooling. The 0.1% odds on 74-75°F reflect the low probability of measurement revisions or alternate station discrepancies, though an official data correction or use of a different reporting site could theoretically alter 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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