Hornbrook, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hornbrook, a community in Siskiyou County, California.
Overnight
57°F
Patchy Smoke
Patchy smoke. Clear. Low around 57, with temperatures rising to around 63 overnight. North northwest wind around 5 mph.
7-day forecast for Hornbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Patchy Smoke | 5 mph NNW | 0% |
| Tuesday | 103°F | Areas Of Smoke | 3 to 8 mph NNE | 0% |
| Tuesday Night | 62°F | Areas Of Smoke | 2 to 8 mph NNW | 0% |
| Wednesday | 104°F | Sunny | 2 to 7 mph NE | 0% |
| Wednesday Night | 64°F | Clear | 1 to 7 mph N | 0% |
| Thursday | 103°F | Sunny | 1 to 7 mph SSE | 0% |
| Thursday Night | 64°F | Clear | 0 to 8 mph NNW | 0% |
| Friday | 101°F | Sunny | 0 to 10 mph N | 0% |
| Friday Night | 61°F | Clear | 1 to 10 mph N | 0% |
| Saturday | 98°F | Sunny | 1 to 16 mph N | 0% |
| Saturday Night | 60°F | Clear | 2 to 16 mph N | 0% |
| Sunday | 94°F | Sunny | 1 to 16 mph N | 0% |
| Sunday Night | 57°F | Clear | 2 to 16 mph N | 0% |
| Monday | 94°F | Sunny | 1 to 15 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Hornbrook (41.905, -122.558). Updated through the day.
Growing snapshot for Hornbrook
Last spring frost
May 12
First fall frost
Oct 8
Growing season
148 days
Hardiness zone
8a
More local growing data for Hornbrook: nearby ZIP 96044 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Carrick
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Lake Shastina
Macdoel
McCloud
Montague
Mount Hebron
Mount Shasta
Tennant
Weed
Yreka
Climate data from the nearest NOAA station, Montague Siskiyou Co Ap, Ca (14.8 mi from Hornbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.