West Haven-Sylvan, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Haven-Sylvan, a community in Washington County, Oregon.
Today
94°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 94. Northeast wind around 8 mph.
7-day forecast for West Haven-Sylvan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Areas Of Smoke | 8 mph NE | 0% |
| Tonight | 63°F | Smoke | 7 mph N | 0% |
| Wednesday | 96°F | Areas Of Smoke | 5 mph N | 0% |
| Wednesday Night | 65°F | Clear | 1 to 5 mph NNW | 0% |
| Thursday | 96°F | Sunny | 3 mph NNW | 0% |
| Thursday Night | 63°F | Clear | 1 to 5 mph NNW | 0% |
| Friday | 91°F | Sunny | 1 to 7 mph N | 0% |
| Friday Night | 60°F | Mostly Clear | 2 to 8 mph NNW | 0% |
| Saturday | 85°F | Sunny | 2 to 9 mph NNW | 0% |
| Saturday Night | 57°F | Mostly Clear | 3 to 9 mph NNW | 0% |
| Sunday | 79°F | Sunny | 3 to 8 mph NNW | 0% |
| Sunday Night | 55°F | Mostly Clear | 2 to 8 mph NNW | 0% |
| Monday | 79°F | Sunny | 2 to 7 mph NNW | 0% |
| Monday Night | 55°F | Mostly Clear | 1 to 7 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for West Haven-Sylvan (45.516, -122.765). Updated through the day.
Growing snapshot for West Haven-Sylvan
Last spring frost
Feb 11
First fall frost
Dec 5
Growing season
303 days
Hardiness zone
8b
More local growing data for West Haven-Sylvan: nearby ZIP 97225 weather · frost dates · planting calendar · Oregon frost dates
Nearby towns & communities
Aloha
Banks
Beaverton
Bethany
Bull Mountain
Cedar Hills
Cedar Mill
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 Slope
Climate data from the nearest NOAA station, Nature Park-Beaverton, Or (3.4 mi from West Haven-Sylvan). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.