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 86.
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
- Jul 17 to Jul 18, 2026
- Latest sync
- Jul 12, 2026 6:46 PM PDT
- Forecast office
- REV
- Source
- NOAA / NWS
Daily Outlook
This Week in Lassen County
Friday looks like the warmest upcoming period in Lassen County at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 58 degrees F.
The strongest winds are forecast for Friday at about 0 to 10 mph SW.
The forecast from Jul 17 through Jul 18 stays mostly dry.
Forecast Details
- Last updated
- Jul 12, 2026 6:46 PM PDT
- Coverage
- 3 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
Partly cloudy, with a low around 58.
Mostly sunny, with a high near 84.
Mostly cloudy, with a low around 59.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Sunny
|
86°F |
0 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Partly Cloudy
|
58°F |
5 to 10 mph
W
|
|
Saturday
Jul 18
|
Mostly Sunny
|
84°F |
0 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Mostly Cloudy
|
59°F |
5 to 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.
