# Napa, CA weather forecast

Tomorrow in Napa, Wed 28 Oct: high 69.0 °F, low 44.0 °F, the median of 9 free forecasts (7 for the low). Station: Napa Cnty (KAPC). As of 2026-10-28T06:06Z.

| Day | High °F | Low °F | Source spread (highs) | Source spread (lows) | Forecasts | Rain chance | Rain in |
|---|---|---|---|---|---|---|---|
| Wed 28 Oct | 69.0 | 44.0 | 68.0–73.2 | 40.4–49.2 | 9 | <2% | 0.00 |
| Thu 29 Oct | 66.2 | 45.5 | 64.7–68.2 | 39.0–52.8 | 9 | <2% | 0.00 |
| Fri 30 Oct | 66.8 | 46.2 | 65.0–67.4 | 43.0–52.2 | 9 | <2% | 0.00 |
| Sat 31 Oct | 64.5 | 44.6 | 58.0–65.5 | 41.0–51.4 | 9 | 12% | 0.00 |
| Sun 1 Nov | 67.8 | 42.3 | 65.0–74.5 | 34.8–49.5 | 8 | 20% | 0.00 |
| Mon 2 Nov | 72.1 | 43.0 | 66.0–73.7 | 38.0–51.4 | 8 | 8% | 0.00 |
| Tue 3 Nov | 74.5 | 44.0 | 67.0–75.6 | 39.4–51.8 | 7 | 44% | 0.00 |

Rain today: 0.00 in so far at KAPC (hourly station reports to 10:54 pm); rest of day <2% (n 2: ENS, GEFS members' share, raw), 0.00 in. October to date: 0.36 in (NWS climate reports (CLI) through Oct 26); ≈ <0.01 in expected rest of month (0.00–0.06).

Alerts: Coastal Flood Advisory (NWS San Francisco CA), until 5 pm Fri.

Weather markets here: Kalshi rain. Station, rule and the number so far for each: https://groundhog.markets/p/napa#markets (API: https://groundhog.markets/api/v1/markets?place=napa).

Credits: NOAA/NWS (public domain); MET Norway, DWD, GeoNames (CC BY 4.0); ECCC (Open Licence); based on ECMWF data (CC BY 4.0; ECMWF accepts no liability); modified by groundhog. Full: groundhog.markets/credits
Page: https://groundhog.markets/p/napa