The edge you need for precipitation markets.
Real-time NWS settlement data, forecast intelligence, and trading signals for Kalshi weather contracts.
Every active precipitation contract on Kalshi, with real-time odds.
We show you the exact NWS data Kalshi uses to settle. Not forecasts — the actual source.
When market odds diverge from the forecast, we flag the opportunity.
Works with both the visual dashboard and the API
Free forever • Pro from $9/mo
GET /v1/signals
?market=KNYC-PRECIP
{
"signal": "OPPORTUNITY",
"divergence_score": 82,
"market_odds": 0.15,
"forecast_prob": 0.65
}100 free requests/day • Pro from $19/mo
Kalshi precipitation contracts settle based on NWS CLI reports, not commercial weather apps.
We show you the settlement source directly — the exact data that determines winners and losers. Stop guessing with consumer forecasts. See what actually matters.
"Light rain expected"
"30% chance of rain"
"0.04 inches recorded"
← This is what settles the contract
Pipe settlement data and signals directly into your trading system
// 1. Get the signal
const signal = await fetch(
'https://api.precipitation.ai/v1/signals?market=KNYC-PRECIP-2026-02-23'
).then(r => r.json())
// 2. Act on it
if (signal.type === 'OPPORTUNITY' && signal.divergence_score > 70) {
await kalshi.placeOrder({
market: signal.market_id,
side: 'yes',
bracket: signal.forecast_bracket,
amount: 50
})
}Kalshi is a regulated prediction market exchange where you can trade on real-world events — including weather. Precipitation contracts let you buy "YES" or "NO" shares on whether it will rain/snow a certain amount in a city. When the contract settles based on official NWS data, winners get $1 per share. If you bought YES at 30¢ and it rains, you profit 70¢.
Buy YES
It rains
Contract settles
You profit
Start free. Upgrade when the signals pay for themselves.
Get started
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All plans include trade links to Kalshi and Polymarket
Built by a Kalshi trader, for Kalshi traders.
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precipitation.ai is operated by Sourdough AI LLC. Trading prediction markets involves risk. See our Risk Disclaimer. Not financial advice.
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