Will London have less than 30mm of precipitation in September?
What resolves this contract
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in September, 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 September 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 September 2026 is released. If the relevant data is not availabl
How to read the price
Prediction market prices are expressed in cents on the dollar. A YES contract trading at 45¢ means the market is pricing in a 45.5% implied probability of the event resolving YES. If resolution comes back YES, the contract pays $1. If NO, it pays $0.
Volume vs. open interest
Total traded volume ($9,754) reflects every buy and sell across the life of this contract. Open interest ($453) is the dollar value of positions currently held by traders. Deep liquidity and wide open interest are the two signals that the quoted price is reliable.
Where to trade this market
This contract is listed on Polymarket. PicksByOdds does not accept deposits, execute trades, or offer brokerage. We publish the data; you decide what to do with it.
Markets in the same story
| Market | YES | Volume |
|---|---|---|
| Fed rate hike in 2026? | 95¢ | $9,749,934 |
| Will the Doge-1 Lunar Mission launch by December 31, 2026? | 3¢ | $993,645 |
| Fed Rate Hike by October 2026 Meeting? | 90¢ | $982,737 |
Common questions about this market
How is this market resolved?
This market will resolve according to the total precipitation in mm at Heathrow (London Airport) in September, 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 September 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 September 2026 is released. If the relevant data is not availabl
When does this contract expire?
This contract closes on 2026-09-30, 15 days from now. After close, the final outcome is determined per the resolution rules above, and contracts settle at $1 (winning side) or $0 (losing side).
What happens if I buy YES at 45¢?
If the event resolves YES, each YES contract pays $1, a profit of 54¢ per dollar risked. If it resolves NO, the contract pays $0 and the full 45¢ is lost. Current market price implies a 45.5% probability of YES.
Where is this market listed?
This contract is listed on Polymarket. PicksByOdds aggregates and displays public market data; we do not broker trades or custody funds.
How reliable is the quoted price?
This market has $9,754 in total traded volume and $453 in open interest. Deeper liquidity generally means tighter spreads and more reliable implied probabilities. Prices refresh multiple times per day.