Hillsboro, OR Weather & Growing Conditions
Today
80°F
Mostly Sunny
Mostly sunny, with a high near 80. North wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Mostly Sunny | 2 mph N | 0% |
| Tonight | 50°F | Mostly Clear then Patchy Fog | 2 mph NW | 0% |
| Sunday | 83°F | Patchy Fog then Sunny | 0 to 6 mph NNW | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 to 6 mph NNW | 0% |
| Monday | 77°F | Mostly Sunny | 0 to 7 mph NNW | 0% |
| Monday Night | 50°F | Partly Cloudy | 0 to 7 mph NNW | 0% |
| Tuesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 6 mph N | 0% |
| Tuesday Night | 48°F | Partly Cloudy then Patchy Fog | 0 to 6 mph NNW | 0% |
| Wednesday | 73°F | Patchy Fog then Partly Sunny | 2 mph N | 0% |
| Wednesday Night | 49°F | Mostly Cloudy | 2 mph NNW | 2% |
| Thursday | 71°F | Partly Sunny | 0 to 6 mph N | 11% |
| Thursday Night | 48°F | Mostly Cloudy | 2 to 6 mph NNW | 11% |
| Friday | 69°F | Partly Sunny | 1 to 6 mph NNW | 9% |
| Friday Night | 47°F | Partly Cloudy | 2 to 6 mph NNW | 4% |
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 (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.