Keswick, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Keswick, a community in Shasta County, California.
This Afternoon
90°F
Sunny
Sunny, with a high near 90. East wind around 2 mph.
7-day forecast for Keswick
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 90°F | Sunny | 2 mph E | 0% |
| Tonight | 64°F | Clear | 2 to 6 mph WNW | 0% |
| Saturday | 95°F | Sunny | 1 to 6 mph N | 0% |
| Saturday Night | 65°F | Partly Cloudy | 3 mph NNW | 0% |
| Sunday | 92°F | Mostly Sunny | 5 mph E | 0% |
| Sunday Night | 66°F | Partly Cloudy | 1 to 5 mph WNW | 0% |
| Monday | 96°F | Mostly Sunny | 3 mph E | 0% |
| Monday Night | 66°F | Mostly Clear | 0 to 3 mph W | 0% |
| Tuesday | 95°F | Sunny | 5 mph SSE | 0% |
| Tuesday Night | 65°F | Clear | 5 mph WSW | 0% |
| Wednesday | 95°F | Sunny | 5 mph ESE | 0% |
| Wednesday Night | 66°F | Mostly Clear | 3 mph W | 0% |
| Thursday | 94°F | Sunny | 5 mph SE | 0% |
| Thursday Night | 66°F | Mostly Clear | 5 mph W | 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 Sep 19, 2026.