National Weather Service guidance and recent model runs indicate a sunny, stable pattern over South Florida on August 18, with forecast highs near 92–95°F amid light southeasterly flow and typical August moisture. Trader emphasis on the 98–99°F bin reflects uncertainty around afternoon sea-breeze timing and convective initiation, which can either limit peak heating or allow fuller insolation under a stronger ridge; recent days have seen actual readings of 92–93°F with limited storms, while climatological normals hover near 91°F. Heat-index values remain elevated due to humidity, but resolution hinges on official Miami International Airport observations. Updated NWS briefings and afternoon model guidance on instability will be the next key inputs.
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 August 18?
Highest temperature in Miami on August 18?
98-99°F 58%
96-97°F 27%
100-101°F 13%
102-103°F 4%
NEW
NEW
Aug 18, 2026
91°F or below
<1%
92-93°F
<1%
94-95°F
3%
96-97°F
27%
98-99°F
58%
100-101°F
13%
102-103°F
4%
104-105°F
<1%
106-107°F
<1%
108-109°F
<1%
110°F or higher
<1%
98-99°F 58%
96-97°F 27%
100-101°F 13%
102-103°F 4%
NEW
NEW
Aug 18, 2026
91°F or below
$127 Vol.
<1%
92-93°F
$75 Vol.
<1%
94-95°F
$390 Vol.
3%
96-97°F
$469 Vol.
27%
98-99°F
$804 Vol.
58%
100-101°F
$778 Vol.
13%
102-103°F
$295 Vol.
4%
104-105°F
$55 Vol.
<1%
106-107°F
$101 Vol.
<1%
108-109°F
$116 Vol.
<1%
110°F or higher
$140 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.National Weather Service guidance and recent model runs indicate a sunny, stable pattern over South Florida on August 18, with forecast highs near 92–95°F amid light southeasterly flow and typical August moisture. Trader emphasis on the 98–99°F bin reflects uncertainty around afternoon sea-breeze timing and convective initiation, which can either limit peak heating or allow fuller insolation under a stronger ridge; recent days have seen actual readings of 92–93°F with limited storms, while climatological normals hover near 91°F. Heat-index values remain elevated due to humidity, but resolution hinges on official Miami International Airport observations. Updated NWS briefings and afternoon model guidance on instability will be the next key inputs.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 16, 2026, 9:56 PM ET
Volume
$3,350End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 9:56 PM ETResolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.National Weather Service guidance and recent model runs indicate a sunny, stable pattern over South Florida on August 18, with forecast highs near 92–95°F amid light southeasterly flow and typical August moisture. Trader emphasis on the 98–99°F bin reflects uncertainty around afternoon sea-breeze timing and convective initiation, which can either limit peak heating or allow fuller insolation under a stronger ridge; recent days have seen actual readings of 92–93°F with limited storms, while climatological normals hover near 91°F. Heat-index values remain elevated due to humidity, but resolution hinges on official Miami International Airport observations. Updated NWS briefings and afternoon model guidance on instability will be the next key inputs.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Miami Intl Airport Station, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$3,350End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 9:56 PM ETResolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...National Weather Service guidance and recent model runs indicate a sunny, stable pattern over South Florida on August 18, with forecast highs near 92–95°F amid light southeasterly flow and typical August moisture. Trader emphasis on the 98–99°F bin reflects uncertainty around afternoon sea-breeze timing and convective initiation, which can either limit peak heating or allow fuller insolation under a stronger ridge; recent days have seen actual readings of 92–93°F with limited storms, while climatological normals hover near 91°F. Heat-index values remain elevated due to humidity, but resolution hinges on official Miami International Airport observations. Updated NWS briefings and afternoon model guidance on instability will be the next key inputs.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions