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 66. Southeast wind 5 to 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
- Oct 16 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 9:41 AM PDT
- Forecast office
- REV
- Source
- NOAA / NWS
Daily Outlook
This Week in Lassen County
Saturday looks like the warmest upcoming period in Lassen County at 69 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph SE.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 9:41 AM PDT
- Coverage
- 6 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 40. Southeast wind 0 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 69.
Mostly clear, with a low around 39.
Sunny, with a high near 66.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 56.
A slight chance of snow showers after 5am. Mostly cloudy, with a low around 33.
A slight chance of snow showers before 11am, then a slight chance of rain showers. Partly sunny, with a high near 48.
A slight chance of rain showers before 11pm. Partly cloudy, with a low around 31.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Sunny
|
66°F |
5 to 15 mph
SE
|
|
Friday Night
Oct 16
|
Mostly Clear
|
40°F |
0 to 10 mph
SE
|
|
Saturday
Oct 17
|
Sunny
|
69°F |
0 to 5 mph
SW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
39°F |
0 to 5 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
0 to 10 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
5 to 10 mph
SW
|
|
Monday
Oct 19
|
Mostly Sunny
|
56°F |
5 to 15 mph
SW
|
|
Monday Night
Oct 19
|
Mostly Cloudy then Slight Chance Snow Showers
|
33°F |
5 to 10 mph
W
|
|
Tuesday
Oct 20
|
Slight Chance Snow Showers then Slight Chance Rain Showers
|
48°F |
10 mph
NW
|
|
Tuesday Night
Oct 20
|
Slight Chance Rain Showers then Partly Cloudy
|
31°F |
10 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.
