Hillsboro, OR Weather & Growing Conditions
Overnight
59°F
Areas Of Smoke
Areas of smoke. Clear, with a low around 59. North northwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Areas Of Smoke | 6 mph NNW | 0% |
| Tuesday | 95°F | Areas Of Smoke | 8 mph NNE | 0% |
| Tuesday Night | 62°F | Smoke | 3 to 9 mph NNW | 0% |
| Wednesday | 99°F | Areas Of Smoke | 3 mph N | 0% |
| Wednesday Night | 63°F | Clear | 0 to 5 mph NNW | 0% |
| Thursday | 99°F | Sunny | 2 mph N | 0% |
| Thursday Night | 61°F | Clear | 0 to 6 mph NNW | 0% |
| Friday | 93°F | Sunny | 0 to 8 mph N | 0% |
| Friday Night | 59°F | Clear | 2 to 8 mph NNW | 0% |
| Saturday | 86°F | Sunny | 1 to 10 mph NNW | 0% |
| Saturday Night | 56°F | Mostly Clear | 2 to 10 mph NNW | 0% |
| Sunday | 82°F | Sunny | 1 to 9 mph NNW | 0% |
| Sunday Night | 54°F | Mostly Clear | 1 to 9 mph NNW | 0% |
| Monday | 82°F | Sunny | 1 to 8 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hillsboro, OR
Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
8b
Explore more for Hillsboro, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Portland-Hillsboro Ap, Or (6.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.