Trader consensus on Polymarket heavily favors 11°C (30.5%) and 12°C (28.0%) as London's highest temperature on March 29, reflecting the latest UK Met Office and ECMWF forecast ensembles showing daytime highs clustering in that narrow range amid mild but variable spring conditions. Recent model runs over the past 48 hours indicate a weak high-pressure ridge over the North Atlantic allowing southerly flows to bring temperatures 1-2°C above the March climatological average of around 11°C at Heathrow, though divergent jet stream positioning introduces uncertainty, with some GFS variants hinting at cooler 10°C outcomes if northerly winds strengthen. Key differentiators include soil moisture levels dampening extremes and urban heat island effects potentially nudging toward 12°C; watch for daily 12Z model updates that could refine land surface interactions and cloud cover impacts before resolution.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 29?
Highest temperature in London on March 29?
11°C 31%
12°C 30%
10°C 15%
13°C 14%
6°C or below
1%
7°C
<1%
8°C
4%
9°C
8%
10°C
15%
11°C
31%
12°C
30%
13°C
14%
14°C
7%
15°C
<1%
16°C or higher
1%
11°C 31%
12°C 30%
10°C 15%
13°C 14%
6°C or below
1%
7°C
<1%
8°C
4%
9°C
8%
10°C
15%
11°C
31%
12°C
30%
13°C
14%
14°C
7%
15°C
<1%
16°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 London City Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/gb/london/EGLC.
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 25, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/gb/london/EGLCResolver
0x69c47De9D...Trader consensus on Polymarket heavily favors 11°C (30.5%) and 12°C (28.0%) as London's highest temperature on March 29, reflecting the latest UK Met Office and ECMWF forecast ensembles showing daytime highs clustering in that narrow range amid mild but variable spring conditions. Recent model runs over the past 48 hours indicate a weak high-pressure ridge over the North Atlantic allowing southerly flows to bring temperatures 1-2°C above the March climatological average of around 11°C at Heathrow, though divergent jet stream positioning introduces uncertainty, with some GFS variants hinting at cooler 10°C outcomes if northerly winds strengthen. Key differentiators include soil moisture levels dampening extremes and urban heat island effects potentially nudging toward 12°C; watch for daily 12Z model updates that could refine land surface interactions and cloud cover impacts before resolution.
Experimental AI-generated summary referencing Polymarket data · Updated
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