Lassen County, CA Weather Forecast
County weather hub
Sunny
Compare major city weather across Lassen County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 39. North wind around 15 mph, with gusts as high as 30 mph.
County Weather Overview
This county weather page brings together forecast coverage for Lassen County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Lassen County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 16 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 4:28 PM PDT
- Forecast office
- REV
- Source
- NOAA / NWS
Daily Outlook
This Week in Lassen County
Sunday looks like the warmest upcoming period in Lassen County at 61 degrees F.
Tonight is the coolest period ahead with temperatures near 22 degrees F.
The strongest winds are forecast for This Afternoon at about 15 mph N.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 4:28 PM PDT
- Coverage
- 8 days
- Time zone
- America/Los_Angeles
- Forecast office
- REV
- Radar station
- KRGX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 22. Northeast wind 5 to 15 mph, with gusts as high as 30 mph.
Sunny, with a high near 49. East wind 5 to 10 mph, with gusts as high as 25 mph.
Mostly clear, with a low around 29. East wind 5 to 10 mph.
Sunny, with a high near 60. Southeast wind 5 to 10 mph, with gusts as high as 25 mph.
Mostly cloudy, with a low around 38. South wind 5 to 10 mph, with gusts as high as 20 mph.
Partly sunny, with a high near 61.
A slight chance of rain showers after 5am. Mostly cloudy, with a low around 39.
A chance of rain showers. Partly sunny, with a high near 56.
A chance of rain showers before 8pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 36.
A chance of snow showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 49.
A chance of rain and snow showers. Mostly cloudy, with a low around 34.
A chance of snow showers before 2pm, then a chance of rain and snow showers. Partly sunny, with a high near 46.
A slight chance of rain and snow showers before 11pm. Partly cloudy, with a low around 33.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Apr 16
|
Sunny
|
39°F |
15 mph
N
|
|
Tonight
Apr 16
|
Mostly Clear
|
22°F |
5 to 15 mph
NE
|
|
Friday
Apr 17
|
Sunny
|
49°F |
5 to 10 mph
E
|
|
Friday Night
Apr 17
|
Mostly Clear
|
29°F |
5 to 10 mph
E
|
|
Saturday
Apr 18
|
Sunny
|
60°F |
5 to 10 mph
SE
|
|
Saturday Night
Apr 18
|
Mostly Cloudy
|
38°F |
5 to 10 mph
S
|
|
Sunday
Apr 19
|
Partly Sunny
|
61°F |
5 to 15 mph
S
|
|
Sunday Night
Apr 19
|
Mostly Cloudy then Slight Chance Rain Showers
|
39°F |
10 to 15 mph
S
|
|
Monday
Apr 20
|
Chance Rain Showers
|
56°F |
10 to 15 mph
S
|
|
Monday Night
Apr 20
|
Chance Rain And Snow Showers
|
36°F |
5 to 15 mph
SW
|
|
Tuesday
Apr 21
|
Chance Snow Showers
|
49°F |
5 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Chance Rain And Snow Showers
|
34°F |
10 to 15 mph
SW
|
|
Wednesday
Apr 22
|
Chance Snow Showers
|
46°F |
10 to 15 mph
W
|
|
Wednesday Night
Apr 22
|
Slight Chance Rain And Snow Showers then Partly Cloudy
|
33°F |
10 to 15 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Lassen County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Lassen County.
Largest mapped city population in this region: 14,425.
