Cowlitz, WA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Cowlitz, WA in one place.
Sunny, with a high near 83. North northwest wind around 3 mph.
Local Weather Overview
This forecast page for Cowlitz, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 16, 2026 4:17 PM PDT.
The active forecast window currently covers Sep 17 to Sep 22, 2026 for Cowlitz, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 4:17 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Cowlitz
Thursday looks like the warmest upcoming period in Cowlitz at 83 degrees F.
Friday Night is the coolest period ahead with temperatures near 46 degrees F.
The strongest winds are forecast for Sunday at about 0 to 5 mph N.
The forecast from Sep 17 through Sep 22 stays mostly dry.
Forecast Details
- Last updated
- Sep 16, 2026 4:17 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KRTX
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 48. West wind around 2 mph.
Mostly sunny, with a high near 76. South southwest wind around 2 mph.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 76.
Mostly clear, with a low around 46.
Mostly sunny, with a high near 77.
Mostly clear, with a low around 47.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 47.
Partly sunny, with a high near 72.
Partly cloudy, with a low around 46.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Sep 17
|
Sunny
|
83°F |
3 mph
NNW
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
48°F |
2 mph
W
|
|
Friday
Sep 18
|
Mostly Sunny
|
76°F |
2 mph
SSW
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
46°F |
0 mph
|
|
Saturday
Sep 19
|
Mostly Sunny
|
76°F |
2 mph
N
|
|
Saturday Night
Sep 19
|
Mostly Clear
|
46°F |
2 mph
NNW
|
|
Sunday
Sep 20
|
Mostly Sunny
|
77°F |
0 to 5 mph
N
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
47°F |
0 to 5 mph
NNW
|
|
Monday
Sep 21
|
Mostly Sunny
|
74°F |
0 to 5 mph
NNW
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
47°F |
0 to 5 mph
NNW
|
|
Tuesday
Sep 22
|
Partly Sunny
|
72°F |
0 to 5 mph
NNW
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
46°F |
0 to 5 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Cowlitz.