Chehalis, WA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Chehalis, WA in one place.
Mostly sunny. High near 73, with temperatures falling to around 71 in the afternoon. North wind around 1 mph.
Local Weather Overview
This forecast page for Chehalis, 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: Oct 14, 2026 12:11 PM PDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Chehalis, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 12:11 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Chehalis
Friday looks like the warmest upcoming period in Chehalis at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Monday at about 1 to 5 mph S.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 12:11 PM PDT
- Coverage
- 7 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KLGX
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 44. North wind around 1 mph.
Mostly sunny, with a high near 76. Wind around 0 mph.
A chance of rain after 11pm. Mostly cloudy, with a low around 49. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain before 11am. Partly sunny, with a high near 63.
Partly cloudy, with a low around 38.
Partly sunny, with a high near 60.
A chance of rain after 11pm. Mostly cloudy, with a low around 42.
A chance of rain. Mostly cloudy, with a high near 57.
A chance of rain before 5am. Mostly cloudy, with a low around 40.
Partly sunny, with a high near 59.
Partly cloudy, with a low around 38.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Mostly Sunny
|
73°F |
1 mph
N
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
44°F |
1 mph
N
|
|
Friday
Oct 16
|
Mostly Sunny
|
76°F |
0 mph
|
|
Friday Night
Oct 16
|
Chance Light Rain
|
49°F |
1 mph
S
|
|
Saturday
Oct 17
|
Chance Light Rain then Partly Sunny
|
63°F |
3 mph
WSW
|
|
Saturday Night
Oct 17
|
Partly Cloudy
|
38°F |
0 to 3 mph
NW
|
|
Sunday
Oct 18
|
Partly Sunny
|
60°F |
1 mph
N
|
|
Sunday Night
Oct 18
|
Chance Light Rain
|
42°F |
1 mph
S
|
|
Monday
Oct 19
|
Chance Light Rain
|
57°F |
1 to 5 mph
S
|
|
Monday Night
Oct 19
|
Chance Light Rain
|
40°F |
2 mph
S
|
|
Tuesday
Oct 20
|
Partly Sunny
|
59°F |
3 mph
WSW
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
38°F |
2 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chehalis.
