Recent cool and unsettled Atlantic-influenced weather has kept daytime highs in Paris moderated near seasonal norms, with official Météo-France guidance and ensemble models currently favoring a maximum of 15–17 °C on May 18. Persistent cloud cover limits solar heating, while light northerly flow and residual moisture from earlier showers suppress rapid warming. These conditions create tight differentiation among the leading outcomes, as small shifts in cloud timing or wind direction could add or subtract 1–2 °C by midday. Historical May averages sit slightly higher around 18–20 °C, but the current pattern aligns with the market’s emphasis on 16 °C as the most probable peak. Updated high-resolution runs expected in the next 24–48 hours will refine the final range before resolution.
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 May 18?
16°C 35%
15°C 27%
17°C 21%
14°C 11%
9°C or below
<1%
10°C
<1%
11°C
<1%
12°C
1%
13°C
3%
14°C
11%
15°C
27%
16°C
35%
17°C
21%
18°C
5%
19°C or higher
1%
16°C 35%
15°C 27%
17°C 21%
14°C 11%
9°C or below
<1%
10°C
<1%
11°C
<1%
12°C
1%
13°C
3%
14°C
11%
15°C
27%
16°C
35%
17°C
21%
18°C
5%
19°C 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 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: May 16, 2026, 12:03 AM ET
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.
Recent cool and unsettled Atlantic-influenced weather has kept daytime highs in Paris moderated near seasonal norms, with official Météo-France guidance and ensemble models currently favoring a maximum of 15–17 °C on May 18. Persistent cloud cover limits solar heating, while light northerly flow and residual moisture from earlier showers suppress rapid warming. These conditions create tight differentiation among the leading outcomes, as small shifts in cloud timing or wind direction could add or subtract 1–2 °C by midday. Historical May averages sit slightly higher around 18–20 °C, but the current pattern aligns with the market’s emphasis on 16 °C as the most probable peak. Updated high-resolution runs expected in the next 24–48 hours will refine the final range before resolution.
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