Hillsboro
Oregon, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Hillsboro, OR

The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon, and even better in the sun rays
The red tree colors of the fall along a road and amid trees in this tranquil neighborhood in Hillsboro, Oregon, and even better in the sun rays
January, like December, is a frosty winter month in Hillsboro, Oregon, with average temperature fluctuating between 45°F (7.2°C) and 32.7°F (0.4°C).

Temperature

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.

Rainfall

In Hillsboro, during January, the rain falls for 20 days and regularly aggregates up to 6" (152.1mm) of precipitation. Throughout the year, in Hillsboro, there are 151 rainfall days, and 37.7" (958.6mm) of precipitation is accumulated.

Daylight

The average length of the day in January is 9.2h.

What is the coldest month in Hillsboro?

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

What is the temperature in January in Hillsboro?

In January, in Hillsboro, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 32.7°F (0.4°C).

How many days does it rain in January in Hillsboro?

In January, in Hillsboro, the rain falls for 20 days. Throughout January, 6" (152.1mm) of precipitation is accumulated.

How many hours of daylight does Hillsboro have in January?

In January, the average length of the day in Hillsboro, Oregon, is 9.2h.
Average temperature in January - Hillsboro, OR
  • Average high temperature in January: 45°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in January: 32.7°F

The month with the highest average low temperature is July (51.9°F).
The coldest month (with the lowest average low temperature) is January (32.7°F).

Average rainfall in January - Hillsboro, OR
  • Average rainfall in January: 6"

The wettest month (with the highest rainfall) is December (6.8").
The driest month (with the lowest rainfall) is July (0.5").

Average rainfall days in January - Hillsboro, OR
  • Average rainfall days in January: 20 days

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 in January - Hillsboro, OR
  • Average daylight in January: 9.2h

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