# San Francisco, CA weather forecast

Today in San Francisco, Wed 28 Oct: high 66.5 °F, low 51.0 °F, the median of 9 free forecasts (7 for the low). Station: San Francisco Intl (KSFO). As of 2026-10-28T09:20Z.

| Day | High °F | Low °F | Source spread (highs) | Source spread (lows) | Forecasts | Rain chance | Rain in |
|---|---|---|---|---|---|---|---|
| Wed 28 Oct (rest of day) | 66.5 | 51.0 | 63.6–68.0 | 48.3–52.9 | 9 | <2% | 0.00 |
| Thu 29 Oct | 66.1 | 51.8 | 63.7–67.0 | 49.8–53.8 | 10 | <2% | 0.00 |
| Fri 30 Oct | 64.0 | 52.5 | 62.1–65.8 | 50.1–56.3 | 10 | <2% | 0.00 |
| Sat 31 Oct | 62.9 | 51.5 | 60.0–65.1 | 49.5–54.9 | 10 | 8% | 0.00 |
| Sun 1 Nov | 65.9 | 51.0 | 60.5–68.2 | 48.2–53.4 | 9 | 14% | 0.00 |
| Mon 2 Nov | 69.0 | 51.5 | 63.4–71.0 | 47.9–54.7 | 9 | 2% | 0.00 |
| Tue 3 Nov | 70.0 | 52.3 | 64.1–74.8 | 49.8–56.2 | 9 | 38% | 0.00 |

Rain today: 0.00 in so far at KSFO (hourly station reports to 1:56 am); rest of day <2% (n 3: ENS, GEFS, GEPS members' share, raw), 0.00 in. October to date: 0.13 in (NWS climate reports (CLI) through Oct 27); ≈ <0.01 in expected rest of month (0.00–0.06).

Alerts: Coastal Flood Advisory (NWS San Francisco CA), until 6 pm Sat.

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

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/san-francisco