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Precipitation in London in April?

icon for Precipitation in London in April?

Precipitation in London in April?

Apr 30

Apr 30

<20mm 98.4%

20-30mm 1.4%

30-40mm <1%

50-60mm <1%

Polymarket

$23,060 Vol.

<20mm 98.4%

20-30mm 1.4%

30-40mm <1%

50-60mm <1%

Polymarket

$23,060 Vol.

<20mm

$6,076 Vol.

98%

20-30mm

$2,560 Vol.

1%

30-40mm

$2,379 Vol.

1%

40-50mm

$3,290 Vol.

<1%

50-60mm

$4,144 Vol.

<1%

60-70mm

$2,131 Vol.

<1%

70mm+

$2,479 Vol.

<1%

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released. If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen. The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.Observed Met Office measurements at Heathrow Airport, the market's resolution source, record just 3-5mm of total precipitation through April 2026—among the lowest on record and only 8% of the 42mm long-term average—driven by persistent high-pressure systems delivering prolonged dry, settled conditions with minimal light rain events early and late in the month. This scientific evidence underpins the 97.8% trader consensus for under 20mm, reflecting real-money bets on finalized data showing negligible accumulation even after recent zero-rainfall days. Only an unforeseen deluge exceeding 15mm on April 30 could challenge this, though current forecast models from the Met Office indicate clear skies and low precipitation risk, with monthly totals due post-resolution.

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released.

If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.

The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.
Volume
$23,060
End Date
Apr 30, 2026
Market Opened
Mar 24, 2026, 6:20 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released. If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen. The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released. If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen. The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.Observed Met Office measurements at Heathrow Airport, the market's resolution source, record just 3-5mm of total precipitation through April 2026—among the lowest on record and only 8% of the 42mm long-term average—driven by persistent high-pressure systems delivering prolonged dry, settled conditions with minimal light rain events early and late in the month. This scientific evidence underpins the 97.8% trader consensus for under 20mm, reflecting real-money bets on finalized data showing negligible accumulation even after recent zero-rainfall days. Only an unforeseen deluge exceeding 15mm on April 30 could challenge this, though current forecast models from the Met Office indicate clear skies and low precipitation risk, with monthly totals due post-resolution.

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office.

If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket.

The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released.

If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen.

The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.
Volume
$23,060
End Date
Apr 30, 2026
Market Opened
Mar 24, 2026, 6:20 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in April, 2026, according to the Met Office. If the reported value falls exactly between two brackets, then this market will resolve to the higher range bracket. The resolution source for this market will be the Met Office, specifically the figure for April 2026 under "rain mm" at the https://www.metoffice.gov.uk/pub/data/weather/uk/climate/stationdata/heathrowdata.txt link once the Provisional figure for the whole month of April 2026 is released. If the relevant data is not available by June 7, 2026, 11:59 PM ET, another credible resolution source will be chosen. The resolution source for this market measures precipitation to 1 decimal place (e.g., 1.5), thus, this is the level of precision that will be used when resolving this market. Any revisions to precipitation recorded after Provisional data is released for this market's timeframe will not be considered for this market's resolution.

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Frequently Asked Questions

"Precipitation in London in April?" is a prediction market on Polymarket with 7 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "<20mm" at 98%, followed by "20-30mm" at 1%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 98¢ implies that the market collectively assigns a 98% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Precipitation in London in April?" has generated $23.1K in total trading volume since the market launched on Mar 24, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Precipitation in London in April?," browse the 7 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Precipitation in London in April?" is "<20mm" at 98%, meaning the market assigns a 98% chance to that outcome. The next closest outcome is "20-30mm" at 1%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Precipitation in London in April?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.