Jamestown, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamestown, a community in Tuolumne County, California.
Overnight
72°F
Clear
Clear, with a low around 72. Northeast wind around 5 mph.
7-day forecast for Jamestown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Clear | 5 mph NE | 0% |
| Tuesday | 100°F | Sunny | 3 to 7 mph SW | 0% |
| Tuesday Night | 73°F | Clear | 6 mph N | 0% |
| Wednesday | 99°F | Sunny | 3 to 7 mph SW | 0% |
| Wednesday Night | 72°F | Clear | 3 to 7 mph NNW | 0% |
| Thursday | 100°F | Sunny | 3 to 8 mph WNW | 0% |
| Thursday Night | 73°F | Clear | 3 to 8 mph N | 0% |
| Friday | 100°F | Sunny | 2 to 8 mph WNW | 0% |
| Friday Night | 74°F | Clear | 3 to 8 mph N | 0% |
| Saturday | 100°F | Sunny | 2 to 8 mph WNW | 0% |
| Saturday Night | 74°F | Mostly Clear | 3 to 8 mph N | 0% |
| Sunday | 99°F | Sunny | 3 to 7 mph WSW | 0% |
| Sunday Night | 72°F | Mostly Clear | 2 to 7 mph NNE | 0% |
| Monday | 95°F | Sunny | 2 to 7 mph SSW | 0% |
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
9a
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
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 Aug 4, 2026.