Average monthly snow and rainfall in Hillsboro (OR)
The mean monthly precipitation over the year in Hillsboro (Oregon), including rain, snow, hail.
- A lot of rain (rainy season) falls in the months: January, March, November and December.
- Hillsboro has dry periods in July and August.
- On average, December is the wettest month with 185 mm of precipitation.
- On average, July is the driest month with 9 mm of precipitation.
- The average amount of annual precipitation is 963 mm.
Forecast for Hillsboro (OR)
Sun May 05
13°C | 8°C
W 
18 km/h
18 km/h2.7 mm
overcast and rain
Mon May 06
13°C | 6°C
W 22 km/h
22 km/h8.4 mm
partly cloudy and rain
Tue May 07
15°C | 3°C
NW 22 km/h
22 km/h0.6 mm
partly cloudy and slight rain
