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Precipitation in London in May?

icon for Precipitation in London in May?

Precipitation in London in May?

<5mm 100.0%

5-10mm <1%

10-15mm <1%

15-20mm <1%

Polymarket

$29,939 Vol.

<5mm 100.0%

5-10mm <1%

10-15mm <1%

15-20mm <1%

Polymarket

$29,939 Vol.

<5mm

$13,486 Vol.

Yes

5-10mm

$9,128 Vol.

No

10-15mm

$841 Vol.

No

15-20mm

$779 Vol.

No

20-25mm

$1,477 Vol.

No

25-30mm

$2,364 Vol.

No

30mm+

$1,863 Vol.

No

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in May, 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 May 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 May 2026 is released. If the relevant data is not available by July 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.Persistent high-pressure blocking across northwest Europe, reinforced by a negative North Atlantic Oscillation phase, suppressed Atlantic fronts and delivered an exceptionally dry May 2026 across southeast England. Official Met Office and Heathrow station data confirm totals well below the 50–60 mm climatological norm, aligning with the market’s near-certain <5 mm resolution. Model consensus and real-time gauge networks showed minimal measurable rainfall through the final week, locking in the outcome ahead of any post-month verification. Only an unforeseen late-May convective event or official data revision could alter the result, though current observations make such shifts improbable.

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

If the relevant data is not available by July 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
$29,939
End Date
May 31, 2026
Market Opened
Apr 28, 2026, 6:20 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in May, 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 May 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 May 2026 is released. If the relevant data is not available by July 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.

Outcome proposed: Yes

No dispute

Final outcome: Yes

This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in May, 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 May 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 May 2026 is released. If the relevant data is not available by July 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.Persistent high-pressure blocking across northwest Europe, reinforced by a negative North Atlantic Oscillation phase, suppressed Atlantic fronts and delivered an exceptionally dry May 2026 across southeast England. Official Met Office and Heathrow station data confirm totals well below the 50–60 mm climatological norm, aligning with the market’s near-certain <5 mm resolution. Model consensus and real-time gauge networks showed minimal measurable rainfall through the final week, locking in the outcome ahead of any post-month verification. Only an unforeseen late-May convective event or official data revision could alter the result, though current observations make such shifts improbable.

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

If the relevant data is not available by July 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
$29,939
End Date
May 31, 2026
Market Opened
Apr 28, 2026, 6:20 PM ET
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in May, 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 May 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 May 2026 is released. If the relevant data is not available by July 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.

Outcome proposed: Yes

No dispute

Final outcome: Yes

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Frequently Asked Questions

"Precipitation in London in May?" 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 "<5mm" at 100%, followed by "5-10mm" 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 May?" has generated $29.9K in total trading volume since the market launched on Apr 28, 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 May?," 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 May?" is "<5mm" at 100%, meaning the market assigns a 100% chance to that outcome. The next closest outcome is "5-10mm" 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 May?" 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.