Washington County, OR Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Washington County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 73. Northwest wind 0 to 7 mph.
County Weather Overview
This county weather page brings together forecast coverage for Washington County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 17 of 17 mapped cities in Washington County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 11:40 AM PDT
- Forecast office
- PQR
- Source
- NOAA / NWS
Daily Outlook
This Week in Washington County
Monday looks like the warmest upcoming period in Washington County at 76 degrees F.
Saturday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Saturday at about 0 to 7 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 11:40 AM 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 50.
Mostly sunny, with a high near 75.
Partly cloudy, with a low around 51.
Mostly sunny, with a high near 76.
A slight chance of rain after 11pm. Mostly cloudy, with a low around 52.
A chance of rain. Partly sunny, with a high near 72.
A chance of rain. Mostly cloudy, with a low around 52.
A chance of rain. Mostly cloudy, with a high near 70.
A chance of rain. Mostly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Mostly Sunny
|
73°F |
0 to 7 mph
NW
|
|
Saturday Night
Aug 29
|
Mostly Clear
|
50°F |
0 to 7 mph
NNW
|
|
Sunday
Aug 30
|
Mostly Sunny
|
75°F |
0 to 3 mph
NNE
|
|
Sunday Night
Aug 30
|
Partly Cloudy
|
51°F |
0 to 3 mph
NNW
|
|
Monday
Aug 31
|
Mostly Sunny
|
76°F |
2 mph
NW
|
|
Monday Night
Aug 31
|
Slight Chance Light Rain
|
52°F |
2 mph
NW
|
|
Tuesday
Sep 1
|
Chance Light Rain
|
72°F |
0 to 3 mph
SW
|
|
Tuesday Night
Sep 1
|
Chance Light Rain
|
52°F |
0 to 3 mph
WSW
|
|
Wednesday
Sep 2
|
Chance Light Rain
|
70°F |
1 to 5 mph
SW
|
|
Wednesday Night
Sep 2
|
Chance Light Rain
|
52°F |
0 to 3 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Washington County.
Coverage
Forecast coverage currently spans 17 of 17 mapped cities in Washington County.
Largest mapped city population in this region: 110,985.
