Climate

California rainfall, wildfire season, drought, and weather contracts on Kalshi.

Updated Oct 5, 2026

Offer terms

Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

Guides

California Rainfall Winter 2026-27: Climate Markets for the Wet Season

California's water year runs October through September. The first major storms typically arrive in November. Here's how prediction markets cover LA and SF monthly rainfall, and what to actually do with that.

Catie Di Stefano Updated Oct 5, 2026

Guides

California Wildfire Season 2026: Climate Markets for CA Residents

Wildfire season runs roughly May through October. Kalshi and Polymarket both list climate event contracts: including some that touch California fire activity. Here's the honest read on what's tradable and what isn't.

Catie Di Stefano Updated Sep 17, 2026

California Rainfall Winter 2026-27: Climate Markets for the Wet Season

California Wildfire Season 2026: Climate Markets for CA Residents

Get the California markets digest