Susanville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Susanville, a city in Lassen County, California.
Overnight
59°F
Haze
Haze and patchy smoke. Clear, with a low around 59. Wind around 0 mph.
7-day forecast for Susanville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Haze | 0 mph | 0% |
| Tuesday | 99°F | Haze | 0 to 5 mph SE | 0% |
| Tuesday Night | 62°F | Mostly Clear | 5 to 10 mph W | 0% |
| Wednesday | 100°F | Sunny | 5 to 10 mph W | 0% |
| Wednesday Night | 60°F | Clear | 5 to 10 mph W | 0% |
| Thursday | 100°F | Sunny | 5 to 15 mph SW | 0% |
| Thursday Night | 61°F | Clear | 0 to 15 mph W | 0% |
| Friday | 101°F | Sunny | 0 to 15 mph SW | 0% |
| Friday Night | 63°F | Clear | 5 to 15 mph W | 0% |
| Saturday | 99°F | Sunny | 5 to 15 mph SW | 0% |
| Saturday Night | 62°F | Clear | 0 to 15 mph W | 0% |
| Sunday | 97°F | Sunny | 0 to 15 mph SW | 0% |
| Sunday Night | 59°F | Mostly Clear | 0 to 15 mph W | 1% |
| Monday | 94°F | Sunny | 0 to 15 mph SW | 1% |
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 Aug 4, 2026.