Spring
62°F / 40°F
March, April, May: about 8.3 in of rain.
Plan a visit
Best time to visit Hillsboro
June, July, August bring mild highs and the least rain.
Best time to visit
June · July · August
Highs between 65°F and 85°F with the least rain of the year. Hottest: August (82°F). Coldest nights: December (33°F). Wettest: December.
Hillsboro by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Wet | 47°F / 34°F | 5.3 in | |
| February | Wet | 51°F / 34°F | 4.0 in | Valentine’s Day |
| March | Wet | 56°F / 37°F | 3.7 in | St. Patrick’s Day |
| April | Wet | 61°F / 39°F | 2.6 in | |
| May | Wet | 69°F / 45°F | 2.0 in | |
| June | Great | 74°F / 49°F | 1.3 in | Fourth of July |
| July | Great | 82°F / 52°F | 0.40 in | Fourth of July |
| August | Great | 82°F / 52°F | 0.50 in | |
| September | Great | 76°F / 48°F | 1.4 in | Halloween |
| October | Wet | 64°F / 41°F | 3.4 in | Halloween |
| November | Wet | 53°F / 37°F | 5.4 in | Halloween, Thanksgiving, Christmas |
| December | Wet | 46°F / 33°F | 6.0 in | Christmas, New Year’s Eve |
“Great” means highs between 65°F and 85°F with fewer than 10 wet days. Averages are NOAA’s 1991–2020 normals for the Portland-Hillsboro Ap station, not a forecast.
See Hillsboro before you go
A WALK AROUND TOWN
Hillsboro, Oregon (Orenco Station, Downtown) 4K Walking Tour Binaural Audio
A recorded walk through Orenco Station and downtown Hillsboro, showing neighborhood streets and civic surroundings.
Watch on YouTube ↗
A WALK AROUND TOWN
Walking Tour of "The Streets of Tanasbourne" in Hillsboro, Oregon
A creator-led walk around the Streets of Tanasbourne shopping area in Hillsboro.
Watch on YouTube ↗Questions
What is the best month to visit Hillsboro?
June, July, August: highs between 65°F and 85°F with the least rain.
What is the hottest month in Hillsboro?
August, averaging 82°F highs.
What is the coldest month in Hillsboro?
December, with average lows of 33°F.
What is the rainiest month in Hillsboro?
December, averaging 6.0 in of precipitation.
When are the big holidays in Hillsboro?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.