Happy Valley, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Happy Valley, a community in Shasta County, California.
Overnight
81°F
Clear
Clear. Low around 81, with temperatures rising to around 83 overnight. North wind around 3 mph.
7-day forecast for Happy Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 81°F | Clear | 3 mph N | 0% |
| Tuesday | 105°F | Sunny | 3 to 7 mph NE | 0% |
| Tuesday Night | 73°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Wednesday | 103°F | Sunny | 2 to 8 mph S | 0% |
| Wednesday Night | 71°F | Clear | 1 to 8 mph NW | 0% |
| Thursday | 102°F | Sunny | 1 to 7 mph ENE | 0% |
| Thursday Night | 71°F | Clear | 1 to 7 mph WNW | 0% |
| Friday | 103°F | Sunny | 1 to 7 mph SE | 0% |
| Friday Night | 72°F | Clear | 0 to 7 mph W | 0% |
| Saturday | 104°F | Sunny | 0 to 7 mph E | 0% |
| Saturday Night | 71°F | Clear | 2 to 7 mph W | 0% |
| Sunday | 102°F | Sunny | 2 to 8 mph E | 0% |
| Sunday Night | 70°F | Mostly Clear | 1 to 8 mph W | 0% |
| Monday | 98°F | Sunny | 1 to 9 mph SSE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Happy Valley (40.466, -122.418). Updated through the day.
Growing snapshot for Happy Valley
Last spring frost
Mar 3
First fall frost
Nov 21
Growing season
261 days
Hardiness zone
9a
More local growing data for Happy Valley: nearby ZIP 96007 weather · frost dates · planting calendar · California frost dates
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Lake California
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Shasta
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Climate data from the nearest NOAA station, Redding Muni Ap, Ca (4.2 mi from Happy Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.