Susanville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Susanville, a city in Lassen County, California.
This Afternoon
55°F
Chance Light Rain
A chance of rain. Mostly cloudy. High near 55, with temperatures falling to around 45 in the afternoon. West wind 10 to 15 mph. Chance of precipitation is 50%.
7-day forecast for Susanville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 55°F | Chance Light Rain | 10 to 15 mph W | 47% |
| Tonight | 33°F | Slight Chance Light Rain then Partly Cloudy | 0 to 10 mph NW | 15% |
| Wednesday | 57°F | Mostly Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 34°F | Partly Cloudy | 0 mph | 0% |
| Thursday | 61°F | Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 35°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Friday | 61°F | Sunny | 0 to 5 mph NE | 0% |
| Friday Night | 37°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Saturday | 64°F | Sunny | 0 to 5 mph E | 0% |
| Saturday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 67°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 37°F | Partly Cloudy | 0 mph | 0% |
| Monday | 65°F | Mostly Sunny | 0 to 5 mph SW | 4% |
| Monday Night | 37°F | Partly Cloudy | 0 to 5 mph W | 4% |
Forecast source: National Weather Service (api.weather.gov) for Susanville (40.434, -120.628). Updated through the day.
Growing snapshot for Susanville
Last spring frost
May 16
First fall frost
Oct 8
Growing season
143 days
Hardiness zone
7a
More local growing data for Susanville: nearby ZIP 96130 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Adin
Bieber
Doyle
Herlong
Janesville
Johnstonville
Litchfield
Little Valley
Madeline
Milford
Nubieber
Patton Village
Spaulding
Stones Landing
Climate data from the nearest NOAA station, Susanville 2Sw, Ca (9.3 mi from Susanville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.