Mill Plain, WA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mill Plain, WA in one place.
Mostly sunny, with a high near 82. North northwest wind 1 to 7 mph.
Local Weather Overview
This forecast page for Mill Plain, 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 18, 2026 4:40 PM PDT.
The active forecast window currently covers Sep 20 to Sep 24, 2026 for Mill Plain, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 20 to Sep 24, 2026
- Latest sync
- Sep 18, 2026 4:40 PM PDT
- Forecast office
- PQR
- Source
- NOAA / NWS
Daily Outlook
This Week in Mill Plain
Sunday looks like the warmest upcoming period in Mill Plain at 82 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Monday at about 1 to 8 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Sep 18, 2026 4:40 PM PDT
- Coverage
- 6 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 clear, with a low around 53.
Patchy fog between 7am and 8am. Mostly sunny, with a high near 76.
Partly cloudy, with a low around 54.
Partly sunny, with a high near 73.
Partly cloudy, with a low around 50.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 53.
Mostly sunny, with a high near 76.
A slight chance of rain after 11pm. Mostly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Sep 20
|
Mostly Sunny
|
82°F |
1 to 7 mph
NNW
|
|
Sunday Night
Sep 20
|
Mostly Clear
|
53°F |
1 to 7 mph
NW
|
|
Monday
Sep 21
|
Patchy Fog then Mostly Sunny
|
76°F |
1 to 8 mph
NW
|
|
Monday Night
Sep 21
|
Partly Cloudy
|
54°F |
1 to 8 mph
NW
|
|
Tuesday
Sep 22
|
Partly Sunny
|
73°F |
1 to 7 mph
NW
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
50°F |
1 to 7 mph
N
|
|
Wednesday
Sep 23
|
Mostly Sunny
|
73°F |
1 to 5 mph
N
|
|
Wednesday Night
Sep 23
|
Partly Cloudy
|
53°F |
0 to 5 mph
N
|
|
Thursday
Sep 24
|
Mostly Sunny
|
76°F |
1 to 6 mph
NNE
|
|
Thursday Night
Sep 24
|
Slight Chance Light Rain
|
53°F |
6 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mill Plain.