Gaston, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Gaston, a city in Washington County, Oregon.
Overnight
58°F
Areas Of Smoke
Areas of smoke. Clear. Low around 58, with temperatures rising to around 60 overnight. North wind around 6 mph.
7-day forecast for Gaston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Areas Of Smoke | 6 mph N | 0% |
| Tuesday | 94°F | Areas Of Smoke | 9 mph NNE | 0% |
| Tuesday Night | 63°F | Smoke | 5 to 9 mph N | 0% |
| Wednesday | 99°F | Areas Of Smoke | 5 mph N | 0% |
| Wednesday Night | 62°F | Clear | 0 to 3 mph NNW | 0% |
| Thursday | 98°F | Sunny | 2 mph N | 0% |
| Thursday Night | 59°F | Clear | 0 to 5 mph NNW | 0% |
| Friday | 93°F | Sunny | 0 to 7 mph N | 0% |
| Friday Night | 58°F | Clear | 0 to 7 mph NNW | 0% |
| Saturday | 86°F | Sunny | 0 to 9 mph N | 0% |
| Saturday Night | 54°F | Mostly Clear | 1 to 9 mph NNW | 0% |
| Sunday | 82°F | Sunny | 1 to 8 mph NNW | 0% |
| Sunday Night | 52°F | Mostly Clear | 0 to 8 mph NNW | 0% |
| Monday | 82°F | Sunny | 0 to 7 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Gaston (45.435, -123.145). Updated through the day.
Growing snapshot for Gaston
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
192 days
Hardiness zone
8b
More local growing data for Gaston: nearby ZIP 97119 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Forest Grove, Or (6.8 mi from Gaston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.