Trader consensus heavily favors a Miami high of 76-77°F on March 20 (99.9% implied probability), driven by the latest ensemble forecasts from NOAA's GFS and ECMWF models, which converge on mild conditions following a recent cold front bringing northerly winds and below-average temperatures. Historical March data shows Miami averages 78-80°F highs, but current upper-air patterns—characterized by a deep trough over the eastern U.S.—support this cooler outlook, corroborated by short-range guidance from the National Weather Service Miami office projecting peaks near 76°F under partly cloudy skies. Realistic challenges include an unexpected breakdown in the front, allowing warm advection from the south, or model biases underestimating diurnal heating, though low-probability convective activity could cap highs further.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Miami on March 20?
Highest temperature in Miami on March 20?
76-77°F 99.9%
78-79°F <1%
80-81°F <1%
82-83°F <1%
$100,654 Vol.
$100,654 Vol.
76-77°F
100%
78-79°F
<1%
80-81°F
<1%
82-83°F
<1%
84-85°F
<1%
86°F or higher
<1%
76-77°F 99.9%
78-79°F <1%
80-81°F <1%
82-83°F <1%
$100,654 Vol.
$100,654 Vol.
76-77°F
100%
78-79°F
<1%
80-81°F
<1%
82-83°F
<1%
84-85°F
<1%
86°F or higher
<1%
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Miami Intl Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 16, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Trader consensus heavily favors a Miami high of 76-77°F on March 20 (99.9% implied probability), driven by the latest ensemble forecasts from NOAA's GFS and ECMWF models, which converge on mild conditions following a recent cold front bringing northerly winds and below-average temperatures. Historical March data shows Miami averages 78-80°F highs, but current upper-air patterns—characterized by a deep trough over the eastern U.S.—support this cooler outlook, corroborated by short-range guidance from the National Weather Service Miami office projecting peaks near 76°F under partly cloudy skies. Realistic challenges include an unexpected breakdown in the front, allowing warm advection from the south, or model biases underestimating diurnal heating, though low-probability convective activity could cap highs further.
Experimental AI-generated summary referencing Polymarket data · Updated
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