West Slope, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Slope, a community in Washington County, Oregon.
Overnight
40°F
Patchy Fog
Patchy fog after 4am. Mostly clear, with a low around 40. Wind around 0 mph.
7-day forecast for West Slope
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Patchy Fog | 0 mph | 1% |
| Wednesday | 57°F | Patchy Fog then Light Rain Likely | 2 mph SSE | 65% |
| Wednesday Night | 46°F | Light Rain | 0 to 3 mph SSW | 88% |
| Thursday | 59°F | Areas Of Fog then Mostly Sunny | 1 mph SSW | 6% |
| Thursday Night | 44°F | Patchy Fog then Slight Chance Light Rain | 0 mph | 18% |
| Friday | 58°F | Chance Light Rain | 1 mph S | 29% |
| Friday Night | 46°F | Chance Light Rain then Mostly Cloudy | 1 mph E | 29% |
| Saturday | 63°F | Partly Sunny then Slight Chance Light Rain | 1 mph SSE | 20% |
| Saturday Night | 49°F | Light Rain | 1 to 7 mph S | 76% |
| Sunday | 58°F | Chance Light Rain | 3 mph SSW | 40% |
| Sunday Night | 44°F | Slight Chance Light Rain then Mostly Cloudy | 1 mph W | 15% |
| Monday | 56°F | Chance Light Rain | 1 mph SE | 32% |
| Monday Night | 46°F | Chance Light Rain | 1 mph S | 38% |
| Tuesday | 58°F | Chance Light Rain | 1 mph S | 40% |
Forecast source: National Weather Service (api.weather.gov) for West Slope (45.496, -122.773). Updated through the day.
Growing snapshot for West Slope
Last spring frost
Feb 11
First fall frost
Dec 5
Growing season
303 days
Hardiness zone
8b
More local growing data for West Slope: nearby ZIP 97225 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Nature Park-Beaverton, Or (3.4 mi from West Slope). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.