Hornbrook, CA Weather & Growing Conditions
Today
73°F
Sunny
Sunny, with a high near 73. East northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 5 mph ENE | 0% |
| Tonight | 51°F | Partly Cloudy | 6 mph NNE | 0% |
| Sunday | 76°F | Mostly Sunny | 5 mph ENE | 0% |
| Sunday Night | 53°F | Mostly Clear | 1 to 5 mph N | 0% |
| Monday | 76°F | Sunny | 1 to 5 mph N | 0% |
| Monday Night | 51°F | Mostly Clear | 1 to 5 mph N | 0% |
| Tuesday | 73°F | Sunny | 1 to 6 mph NNE | 0% |
| Tuesday Night | 48°F | Mostly Clear | 1 to 6 mph N | 1% |
| Wednesday | 72°F | Mostly Sunny | 3 mph NNE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 3 mph N | 1% |
| Thursday | 72°F | Mostly Sunny | 3 mph NNE | 1% |
| Thursday Night | 49°F | Partly Cloudy | 3 mph NNW | 3% |
| Friday | 66°F | Mostly Sunny | 5 mph N | 3% |
| Friday Night | 46°F | Partly Cloudy | 1 to 5 mph N | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hornbrook, CA
Last spring frost
May 12
First fall frost
Oct 8
Growing season
148 days
Hardiness zone
8a
Explore more for Hornbrook, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Montague Siskiyou Co Ap, Ca (14.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.