7-Day Forecast 40.34°N 121.59°W (Text-Only)
NWS Forecast for: 20 Miles W Chester CA
Issued by: National Weather Service Sacramento, CA
Last Update: 2:00 am PDT Oct 12, 2026


Overnight: Widespread frost. Otherwise, mostly clear, with a low around -6. Calm wind.

Columbus Day: Widespread frost before 10am. Otherwise, sunny, with a high near 13. Calm wind becoming west 5 to 8 km/h in the afternoon.

Monday Night: Widespread frost after 11pm. Otherwise, clear, with a low around -7. East wind 8 to 14 km/h, with gusts as high as 32 km/h.

Tuesday: Widespread frost before 10am. Otherwise, sunny, with a high near 18. East wind 5 to 8 km/h becoming calm in the morning.

Tuesday Night: Mostly clear, with a low around -2. Light and variable wind becoming east northeast 9 to 14 km/h in the evening.

Wednesday: Sunny, with a high near 24.

Wednesday Night: Clear, with a low around 1.

Thursday: Widespread frost, mainly between 7am and 8am. Otherwise, sunny, with a high near 26.

Thursday Night: Clear, with a low around 2.

Friday: Sunny, with a high near 25.

Friday Night: Clear, with a low around 2.

Saturday: Sunny, with a high near 23.

Saturday Night: Mostly clear, with a low around 2.

Sunday: Sunny, with a high near 21.



20 Miles W Chester CA
 40.34°N 121.59°W (Elev. 4813 m)

Visit your local NWS office at: https://www.weather.gov/sto