Keswick, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Keswick, a community in Shasta County, California.
Overnight
81°F
Clear
Clear. Low around 81, with temperatures rising to around 84 overnight. Northwest wind around 3 mph.
7-day forecast for Keswick
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 81°F | Clear | 3 mph NW | 0% |
| Tuesday | 107°F | Sunny | 6 mph E | 0% |
| Tuesday Night | 76°F | Mostly Clear | 1 to 6 mph WNW | 0% |
| Wednesday | 104°F | Sunny | 1 to 7 mph S | 0% |
| Wednesday Night | 74°F | Clear | 0 to 7 mph WNW | 0% |
| Thursday | 104°F | Sunny | 1 to 6 mph SSE | 0% |
| Thursday Night | 74°F | Clear | 1 to 6 mph SSW | 0% |
| Friday | 105°F | Sunny | 1 to 6 mph WSW | 0% |
| Friday Night | 74°F | Clear | 2 to 6 mph WSW | 0% |
| Saturday | 106°F | Sunny | 2 to 6 mph SSE | 0% |
| Saturday Night | 74°F | Clear | 6 mph SW | 0% |
| Sunday | 103°F | Sunny | 2 to 7 mph SE | 0% |
| Sunday Night | 72°F | Mostly Clear | 2 to 7 mph W | 0% |
| Monday | 99°F | Sunny | 2 to 7 mph NE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Keswick (40.613, -122.461). Updated through the day.
Growing snapshot for Keswick
Last spring frost
Feb 13
First fall frost
Dec 13
Growing season
304 days
Hardiness zone
9b
More local growing data for Keswick: nearby ZIP 96001 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Whiskeytown Rsvr, Ca (4.5 mi from Keswick). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.