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Precipitation in London in March?

Market icon

Precipitation in London in March?

20-30mm 100.0%

<20mm <1%

30-40mm <1%

40-50mm <1%

Polymarket

$24,209 Vol.

20-30mm 100.0%

<20mm <1%

30-40mm <1%

40-50mm <1%

Polymarket

$24,209 Vol.

<20mm

$11,323 Vol.

No

20-30mm

$2,579 Vol.

Yes

30-40mm

$1,723 Vol.

No

40-50mm

$1,976 Vol.

No

50-60mm

$1,679 Vol.

No

60-70mm

$2,071 Vol.

No

70mm+

$2,859 Vol.

No

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released. If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.Trader consensus on Polymarket has locked in a 100% implied probability for 20-30mm total precipitation at London's Heathrow Airport gauge in March 2026, driven by provisional Met Office station data confirming rainfall accumulation fell squarely in this bin—around 28mm based on nearby observations like 28.2mm at Hampstead and 28.3mm at Reading, consistent with Heathrow's measurements. This drier-than-average outcome (versus the 40-45mm climatological norm) stemmed from high-pressure systems dominating the month's second half, limiting widespread rain despite frequent light showers early on, as noted in official records showing rain on roughly 20 days but low daily totals. Scenarios challenging this include rare provisional-to-final data revisions from gauge quality checks or unrecorded events, though Met Office protocols make shifts across bins unlikely; watch for the full monthly summary release in coming days.

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released.

If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.
Volume
$24,209
End Date
Mar 31, 2026
Market Opened
Mar 13, 2026, 1:38 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released. If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.

Outcome proposed: No

No dispute

Final outcome: No

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released. If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.Trader consensus on Polymarket has locked in a 100% implied probability for 20-30mm total precipitation at London's Heathrow Airport gauge in March 2026, driven by provisional Met Office station data confirming rainfall accumulation fell squarely in this bin—around 28mm based on nearby observations like 28.2mm at Hampstead and 28.3mm at Reading, consistent with Heathrow's measurements. This drier-than-average outcome (versus the 40-45mm climatological norm) stemmed from high-pressure systems dominating the month's second half, limiting widespread rain despite frequent light showers early on, as noted in official records showing rain on roughly 20 days but low daily totals. Scenarios challenging this include rare provisional-to-final data revisions from gauge quality checks or unrecorded events, though Met Office protocols make shifts across bins unlikely; watch for the full monthly summary release in coming days.

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released.

If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.
Volume
$24,209
End Date
Mar 31, 2026
Market Opened
Mar 13, 2026, 1:38 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in March, 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 March 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 March 2026 is released. If the relevant data is not available by May 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. If relevant data is not released by May 7, another resolution source will be chosen.

Outcome proposed: No

No dispute

Final outcome: No

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Frequently Asked Questions

"Precipitation in London in March?" 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 "20-30mm" at 100%, followed by "<20mm" at 0%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 100¢ implies that the market collectively assigns a 100% 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 March?" has generated $24.2K in total trading volume since the market launched on Mar 13, 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 March?," 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 March?" is "20-30mm" at 100%, meaning the market assigns a 100% chance to that outcome. The next closest outcome is "<20mm" at 0%. 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 March?" 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.