Trader consensus on Polymarket tilts narrowly toward 17°C (35%) over 16°C (34.5%) for Paris's highest temperature on March 20, propelled by the latest ECMWF and GFS ensemble mean forecasts clustering afternoon maxima at 16-17°C under a mild Atlantic westerly flow. Météo-France's high-resolution AROME model corroborates this, projecting partly cloudy conditions with sufficient insolation to favor 17°C, though persistent stratocumulus could cap it at 16°C. Key differentiators include boundary-layer mixing efficiency and cloud opacity variability across models, introducing 18°C (20.4%) if clearer skies emerge. Historical March 20 highs average 12°C, but ongoing positive temperature anomalies boost warmer outcomes; watch 12Z updates for shifts.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Paris on March 20?
Highest temperature in Paris on March 20?
17°C 34%
16°C 33%
18°C 17.7%
19°C or higher 7.6%
$18,281 Vol.
$18,281 Vol.
9°C or below
<1%
10°C
1%
11°C
<1%
12°C
1%
13°C
1%
14°C
1%
15°C
8%
16°C
33%
17°C
34%
18°C
18%
19°C or higher
8%
17°C 34%
16°C 33%
18°C 17.7%
19°C or higher 7.6%
$18,281 Vol.
$18,281 Vol.
9°C or below
<1%
10°C
1%
11°C
<1%
12°C
1%
13°C
1%
14°C
1%
15°C
8%
16°C
33%
17°C
34%
18°C
18%
19°C or higher
8%
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 Charles de Gaulle Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fr/paris/LFPG.
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 Celsius (eg, 9°C). 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, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/fr/paris/LFPGResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/fr/paris/LFPGResolver
0x69c47De9D...Trader consensus on Polymarket tilts narrowly toward 17°C (35%) over 16°C (34.5%) for Paris's highest temperature on March 20, propelled by the latest ECMWF and GFS ensemble mean forecasts clustering afternoon maxima at 16-17°C under a mild Atlantic westerly flow. Météo-France's high-resolution AROME model corroborates this, projecting partly cloudy conditions with sufficient insolation to favor 17°C, though persistent stratocumulus could cap it at 16°C. Key differentiators include boundary-layer mixing efficiency and cloud opacity variability across models, introducing 18°C (20.4%) if clearer skies emerge. Historical March 20 highs average 12°C, but ongoing positive temperature anomalies boost warmer outcomes; watch 12Z updates for shifts.
Experimental AI-generated summary referencing Polymarket data · Updated
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