Colusa County, CA Weather Forecast
County weather hub
Sunny
Compare major city weather across Colusa County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 91. Northeast wind 1 to 6 mph.
County Weather Overview
This county weather page brings together forecast coverage for Colusa County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Colusa County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 20 to May 25, 2026
- Latest sync
- May 19, 2026 1:59 PM PDT
- Forecast office
- STO
- Source
- NOAA / NWS
Daily Outlook
This Week in Colusa County
Thursday looks like the warmest upcoming period in Colusa County at 94 degrees F.
Saturday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Saturday at about 0 to 10 mph ESE.
The forecast from May 20 through May 25 stays mostly dry.
Forecast Details
- Last updated
- May 19, 2026 1:59 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- STO
- Radar station
- KBBX
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 60. West southwest wind 1 to 6 mph.
Sunny, with a high near 94. Northeast wind 1 to 5 mph.
Clear, with a low around 61.
Sunny, with a high near 94.
Clear, with a low around 58.
Sunny, with a high near 91.
Mostly clear, with a low around 56.
Sunny, with a high near 91.
Mostly clear, with a low around 57.
Sunny, with a high near 88.
Mostly clear, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
May 20
|
Sunny
|
91°F |
1 to 6 mph
NE
|
|
Wednesday Night
May 20
|
Mostly Clear
|
60°F |
1 to 6 mph
WSW
|
|
Thursday
May 21
|
Sunny
|
94°F |
1 to 5 mph
NE
|
|
Thursday Night
May 21
|
Clear
|
61°F |
0 to 8 mph
SW
|
|
Friday
May 22
|
Sunny
|
94°F |
0 to 8 mph
ENE
|
|
Friday Night
May 22
|
Clear
|
58°F |
0 to 9 mph
S
|
|
Saturday
May 23
|
Sunny
|
91°F |
0 to 10 mph
ESE
|
|
Saturday Night
May 23
|
Mostly Clear
|
56°F |
0 to 10 mph
W
|
|
Sunday
May 24
|
Sunny
|
91°F |
0 to 8 mph
ESE
|
|
Sunday Night
May 24
|
Mostly Clear
|
57°F |
1 to 8 mph
SSW
|
|
Memorial Day
May 25
|
Sunny
|
88°F |
1 to 9 mph
SSE
|
|
Monday Night
May 25
|
Mostly Clear
|
58°F |
3 to 9 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across Colusa County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Colusa County.
Largest mapped city population in this region: 6,098.
