Alturas, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alturas, a city in Modoc County, California.
Tonight
38°F
Mostly Clear
Mostly clear. Low around 38, with temperatures rising to around 43 overnight. North wind 1 to 6 mph.
7-day forecast for Alturas
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 38°F | Mostly Clear | 1 to 6 mph N | 1% |
| Saturday | 79°F | Sunny | 0 to 3 mph ESE | 0% |
| Saturday Night | 39°F | Mostly Clear | 5 mph NNE | 0% |
| Sunday | 82°F | Mostly Sunny | 3 mph ENE | 0% |
| Sunday Night | 43°F | Partly Cloudy | 0 to 5 mph E | 0% |
| Monday | 84°F | Mostly Sunny | 0 to 6 mph N | 2% |
| Monday Night | 43°F | Partly Cloudy | 0 to 6 mph N | 2% |
| Tuesday | 83°F | Sunny | 0 to 7 mph NW | 0% |
| Tuesday Night | 42°F | Mostly Clear | 0 to 7 mph NW | 0% |
| Wednesday | 85°F | Sunny | 0 to 7 mph W | 0% |
| Wednesday Night | 42°F | Mostly Clear | 0 to 7 mph WSW | 0% |
| Thursday | 86°F | Sunny | 0 to 13 mph SSW | 0% |
| Thursday Night | 43°F | Mostly Clear | 2 to 13 mph SSW | 1% |
| Friday | 81°F | Sunny | 3 to 16 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Alturas (41.489, -120.551). Updated through the day.
Growing snapshot for Alturas
Last spring frost
Jun 3
First fall frost
Sep 13
Growing season
97 days
Hardiness zone
6b
More local growing data for Alturas: nearby ZIP 96101 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Alturas, Ca (2.9 mi from Alturas). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.