Hillsboro, OR Weather & Growing Conditions
Today
80°F
Mostly Sunny
Mostly sunny, with a high near 80. North northeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Sunny | 2 mph NNE | 0% |
| Tonight | 52°F | Clear | 2 mph NNW | 0% |
| Sunday | 83°F | Sunny | 0 to 5 mph NNW | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Monday | 78°F | Mostly Sunny | 0 to 7 mph N | 0% |
| Monday Night | 52°F | Partly Cloudy | 0 to 7 mph NNW | 0% |
| Tuesday | 74°F | Partly Sunny | 0 to 5 mph N | 0% |
| Tuesday Night | 50°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Wednesday | 71°F | Partly Sunny | 2 mph NW | 1% |
| Wednesday Night | 51°F | Mostly Cloudy | 3 mph NNW | 4% |
| Thursday | 69°F | Partly Sunny | 2 to 6 mph N | 6% |
| Thursday Night | 51°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 6 mph NNW | 15% |
| Friday | 67°F | Slight Chance Light Rain then Partly Sunny | 2 to 7 mph NNW | 15% |
| Friday Night | 49°F | Partly Cloudy | 3 to 7 mph NNW | 9% |
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 Sep 19, 2026.