Weather World
Washington County, OR Official WebsiteWashington County, OR 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Washington County, OR Weather Forecast
Washington County, OR Weather Forecast Date: 201 AM PDT Thu Sep 17 2026
The area/counties/county of: Tualatin Valley, including the cities of: Sherwood, Hillsboro, Forest Grove, Rockcreek, and Tigard.or toggle through each period.
Rest of Tonight... Clear. Lows in the mid 50s. Winds light.
Thursday... Sunny. Highs in the upper 80s. Winds light.
Thursday Night... Mostly clear. Lows in the lower 50s. Winds light.
Friday... Mostly sunny. Highs in the mid 70s. Light and variable winds.
Friday Night... Mostly clear. Lows in the lower 50s. Light and variable winds.
Saturday... Mostly sunny. Highs in the upper 70s.
Saturday Night... Mostly clear. Lows in the lower 50s.
Sunday... Sunny. Highs in the lower 80s.
Sunday Night... Mostly clear. Lows in the lower 50s.
Monday... Mostly sunny. Highs in the upper 70s.
Monday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 50s.
Tuesday... Mostly sunny. Highs in the mid 70s.
Tuesday Night... Partly cloudy. Lows around 50.
POP = Probability of Precipitation
Washington County Radar Loop
Use the map search tool if you want to place a location marker on the radar map...