Cowlitz County, WA Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Cowlitz County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 69. South southeast wind 1 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Cowlitz County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Cowlitz County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 18 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 9:47 AM PDT
- Forecast office
- PQR
- Source
- NOAA / NWS
Daily Outlook
This Week in Cowlitz County
Sunday looks like the warmest upcoming period in Cowlitz County at 74 degrees F.
Thursday Night is the coolest period ahead with temperatures near 42 degrees F.
The strongest winds are forecast for Wednesday at about 2 to 7 mph SW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 9:47 AM PDT
- Coverage
- 8 days
- Time zone
- America/Los_Angeles
- Forecast office
- PQR
- Radar station
- KRTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 48. East wind around 2 mph.
Mostly cloudy. High near 74, with temperatures falling to around 72 in the afternoon. East southeast wind around 3 mph.
Mostly cloudy, with a low around 50. North wind around 2 mph.
A chance of rain after 5pm. Mostly cloudy, with a high near 71. West northwest wind 0 to 6 mph. Chance of precipitation is 30%.
A chance of rain. Mostly cloudy, with a low around 48. Chance of precipitation is 50%.
Rain likely. Mostly cloudy, with a high near 62.
Rain likely. Mostly cloudy, with a low around 47.
Rain. Mostly cloudy, with a high near 55.
A chance of rain. Mostly cloudy, with a low around 43.
A chance of rain before 5pm. Mostly cloudy, with a high near 59.
Partly cloudy, with a low around 42.
Mostly sunny, with a high near 66.
Partly cloudy, with a low around 44.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Apr 18
|
Mostly Sunny
|
69°F |
1 to 5 mph
SSE
|
|
Tonight
Apr 18
|
Mostly Cloudy
|
48°F |
2 mph
E
|
|
Sunday
Apr 19
|
Mostly Cloudy
|
74°F |
3 mph
ESE
|
|
Sunday Night
Apr 19
|
Mostly Cloudy
|
50°F |
2 mph
N
|
|
Monday
Apr 20
|
Mostly Cloudy then Chance Light Rain
|
71°F |
0 to 6 mph
WNW
|
|
Monday Night
Apr 20
|
Chance Light Rain
|
48°F |
1 to 6 mph
WNW
|
|
Tuesday
Apr 21
|
Light Rain Likely
|
62°F |
1 to 6 mph
WNW
|
|
Tuesday Night
Apr 21
|
Light Rain Likely
|
47°F |
2 to 6 mph
WSW
|
|
Wednesday
Apr 22
|
Light Rain
|
55°F |
2 to 7 mph
SW
|
|
Wednesday Night
Apr 22
|
Chance Light Rain
|
43°F |
2 to 7 mph
SW
|
|
Thursday
Apr 23
|
Chance Light Rain
|
59°F |
2 to 6 mph
SW
|
|
Thursday Night
Apr 23
|
Partly Cloudy
|
42°F |
2 to 6 mph
NNW
|
|
Friday
Apr 24
|
Mostly Sunny
|
66°F |
2 to 7 mph
N
|
|
Friday Night
Apr 24
|
Partly Cloudy
|
44°F |
2 to 7 mph
N
|
Major City Forecasts
Live forecast snapshots for major cities across Cowlitz County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Cowlitz County.
Largest mapped city population in this region: 38,515.
