Official Météo-France observations at the Paris-Montsouris station—the authoritative source for resolution—recorded a maximum temperature of 15°C on April 20, 2026, under persistent cloud cover and a cool northerly flow that capped daytime heating. This outcome matches the latest AROME high-resolution model runs and ECMWF/GFS ensemble consensus from April 19, which projected highs of 15-16°C amid low-insolation conditions typical for mid-April climatology (historical average ~15.5°C). Trader consensus at 100% implied probability reflects this verified data, with real capital aligning on the skin-in-the-game certainty of finalized measurements. Realistic challenges are minimal but could include rare post-audit revisions from auxiliary sensors validating a marginally higher reading, though standard protocols finalize station maxima within hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Paris on April 20?
15°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$223,560 Vol.
$223,560 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C
No
20°C or higher
No
15°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$223,560 Vol.
$223,560 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C
No
20°C or higher
No
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 Paris-Le Bourget Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fr/bonneuil-en-france/LFPB.
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: Apr 18, 2026, 12:17 AM ET
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 Paris-Le Bourget Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/fr/bonneuil-en-france/LFPB.
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.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Météo-France observations at the Paris-Montsouris station—the authoritative source for resolution—recorded a maximum temperature of 15°C on April 20, 2026, under persistent cloud cover and a cool northerly flow that capped daytime heating. This outcome matches the latest AROME high-resolution model runs and ECMWF/GFS ensemble consensus from April 19, which projected highs of 15-16°C amid low-insolation conditions typical for mid-April climatology (historical average ~15.5°C). Trader consensus at 100% implied probability reflects this verified data, with real capital aligning on the skin-in-the-game certainty of finalized measurements. Realistic challenges are minimal but could include rare post-audit revisions from auxiliary sensors validating a marginally higher reading, though standard protocols finalize station maxima within hours.
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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