Trader consensus on Polymarket heavily favors a high of 14°C (37%) for London's March 23 maximum temperature, reflecting Met Office forecasts projecting mild conditions under a high-pressure ridge bringing southerly winds and above-average warmth for late winter. Recent model runs from the UKMO and ECMWF align on peaks of 13-16°C, buoyed by Atlantic mild air advection after a cooler spell, with urban heat island effects in central London potentially nudging readings higher. Historical March highs average 12°C, but current jet stream positioning supports this warmer outlook; upcoming hourly observations from Heathrow and St. James's Park will resolve the market, with low odds on extremes due to settled weather patterns minimizing volatility.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in London on March 23?
Highest temperature in London on March 23?
14°C 38%
15°C 24%
13°C 17%
16°C 15.7%
$29,869 Vol.
$29,869 Vol.
9°C or below
<1%
10°C
<1%
11°C
<1%
12°C
2%
13°C
17%
14°C
38%
15°C
24%
16°C
16%
17°C
3%
18°C
<1%
19°C or higher
<1%
14°C 38%
15°C 24%
13°C 17%
16°C 15.7%
$29,869 Vol.
$29,869 Vol.
9°C or below
<1%
10°C
<1%
11°C
<1%
12°C
2%
13°C
17%
14°C
38%
15°C
24%
16°C
16%
17°C
3%
18°C
<1%
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 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 19, 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 a high of 14°C (37%) for London's March 23 maximum temperature, reflecting Met Office forecasts projecting mild conditions under a high-pressure ridge bringing southerly winds and above-average warmth for late winter. Recent model runs from the UKMO and ECMWF align on peaks of 13-16°C, buoyed by Atlantic mild air advection after a cooler spell, with urban heat island effects in central London potentially nudging readings higher. Historical March highs average 12°C, but current jet stream positioning supports this warmer outlook; upcoming hourly observations from Heathrow and St. James's Park will resolve the market, with low odds on extremes due to settled weather patterns minimizing volatility.
Experimental AI-generated summary referencing Polymarket data · Updated
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