Jamestown, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a community in Tuolumne County, California.

Today

63°F

Partly Sunny then Light Rain Likely

Rain likely after noon. Partly sunny. High near 63, with temperatures falling to around 57 in the afternoon. South southeast wind 3 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast for Jamestown

When	Temp	Forecast	Wind	Precip
Today	63°F	Partly Sunny then Light Rain Likely	3 to 8 mph SSE	73%
Tonight	44°F	Slight Chance Light Rain then Mostly Clear	5 mph ENE	20%
Wednesday	63°F	Sunny	2 to 7 mph NW	0%
Wednesday Night	46°F	Partly Cloudy	5 mph NNE	0%
Thursday	65°F	Sunny	5 mph W	0%
Thursday Night	48°F	Clear	5 mph NE	0%
Friday	67°F	Sunny	3 mph WSW	0%
Friday Night	51°F	Clear	3 mph ENE	0%
Saturday	73°F	Sunny	1 to 5 mph SW	0%
Saturday Night	52°F	Mostly Clear	2 to 6 mph NNW	0%
Sunday	74°F	Sunny	1 to 5 mph WSW	0%
Sunday Night	54°F	Partly Cloudy	3 mph NNW	0%
Monday	72°F	Mostly Sunny	3 mph W	0%
Monday Night	53°F	Partly Cloudy	3 mph NNE	1%

Forecast source: National Weather Service (api.weather.gov) for Jamestown (37.958, -120.407). Updated through the day.

Growing snapshot for Jamestown

Last spring frost

Apr 9

First fall frost

Nov 9

Growing season

213 days

Hardiness zone

More local growing data for Jamestown: nearby ZIP 95370 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Cedar Ridge Chinese Camp Cold Springs East Sonora Groveland La Grange Lake Don Pedro Long Barn Mi-Wuk Village Mono Vista Phoenix Lake Pine Mountain Lake Sierra Village Sonora Soulsbyville Strawberry Tuolumne City Twain Harte

All California locations ›

Climate data from the nearest NOAA station, Sonora, Ca (2.4 mi from Jamestown). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.