Cedar Mill, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cedar Mill, a community in Washington County, Oregon.
Today
60°F
Mostly Cloudy
Mostly cloudy. High near 60, with temperatures falling to around 56 in the afternoon. Northeast wind around 3 mph.
7-day forecast for Cedar Mill
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Mostly Cloudy | 3 mph NE | 14% |
| Tonight | 40°F | Mostly Clear then Areas Of Fog | 0 mph | 5% |
| Wednesday | 56°F | Areas Of Fog then Light Rain Likely | 2 mph SSE | 58% |
| Wednesday Night | 47°F | Light Rain | 1 to 5 mph S | 94% |
| Thursday | 58°F | Patchy Fog then Partly Sunny | 2 mph SSW | 14% |
| Thursday Night | 47°F | Light Rain Likely | 1 mph S | 57% |
| Friday | 57°F | Light Rain Likely | 2 mph SSE | 57% |
| Friday Night | 48°F | Slight Chance Light Rain then Mostly Cloudy | 1 mph ENE | 20% |
| Saturday | 62°F | Partly Sunny then Slight Chance Light Rain | 1 mph SSE | 15% |
| Saturday Night | 50°F | Light Rain Likely | 1 to 8 mph S | 66% |
| Sunday | 59°F | Light Rain Likely | 1 to 6 mph SSW | 66% |
| Sunday Night | 46°F | Mostly Cloudy then Patchy Fog | 1 mph WNW | 19% |
| Monday | 57°F | Areas Of Fog | 2 mph SE | 46% |
| Monday Night | 48°F | Chance Light Rain | 2 mph SSE | 52% |
Forecast source: National Weather Service (api.weather.gov) for Cedar Mill (45.535, -122.801). Updated through the day.
Growing snapshot for Cedar Mill
Last spring frost
Feb 11
First fall frost
Dec 5
Growing season
303 days
Hardiness zone
8b
More local growing data for Cedar Mill: nearby ZIP 97229 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Aloha
Banks
Beaverton
Bethany
Bull Mountain
Cedar Hills
Cherry Grove
Cornelius
Dilley
Durham
Forest Grove
Garden Home-Whitford
Gaston
Hillsboro
King City
Marlene Village
Metzger
North Plains
Oak Hills
Raleigh Hills
Rockcreek
Sherwood
Tigard
Tualatin
West Haven-Sylvan
West Slope
Climate data from the nearest NOAA station, Nature Park-Beaverton, Or (3.8 mi from Cedar Mill). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.