Monthly weather forecast and climate
Hillsboro, OR

What is the coldest month in Hillsboro?

With an average high-temperature of 45°F (7.2°C) and an average low-temperature of 32.7°F (0.4°C), January is the coldest month in Hillsboro, Oregon.

How much does it rain in Hillsboro?

In Hillsboro, Oregon, during the entire year, the rain falls for 151 days, and collects up to 37.7" (958.6mm) of precipitation.

What is the warmest month in Hillsboro?

July and August, with an average high-temperature of 81°F (27.2°C), are warmest months in Hillsboro, Oregon.

What is the driest month in Hillsboro?

The month with the least rainfall in Hillsboro is July when the rain falls for 3 days and typically collects 0.5" (11.7mm) of precipitation.

What is the wettest month in Hillsboro?

December is the month with the most rainfall. Rain falls for 20 days and accumulates 6.8" (172.7mm) of precipitation.
Average rainfall - Hillsboro, OR
Average rainfall days - Hillsboro, OR

Months with the highest number of rainy days are January and December (20 days).
The month with the lowest number of rainy days is July (3 days).

Average daylight - Hillsboro, OR

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).