Snow Day Calculator — California

Use the calculator to estimate your snow day probability anywhere in California. Enter your city or ZIP on the home page—we fetch the next 24 hours of hourly weather and convert it into a single percentage you can use for planning.

How to read your result in California

• 40–60%: borderline—watch timing (overnight vs. daytime) and ice risk near freezing.
• 60–80%: prepare for disruptions; monitor district alerts.
• 80%+: high chance of delays or closures, especially with early‑morning snow.

Weather can vary within the state—elevation, proximity to lakes or the coast, and local plow resources all matter. Always confirm with your school district.

Quick links: popular cities in California

Los Angeles · San Francisco · Sacramento · San Diego

FAQ for families in California

Can I search by ZIP code?

Yes—ZIPs and city names both work. We bias five‑digit inputs to U.S. ZIP codes.

Does the calculator know my district’s policy?

No, it’s a generalized estimate using forecast ingredients. Decisions vary by district.

When should I check?

Results are most informative the evening before a potential event and again early morning.