Forest Grove
Oregon, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Forest Grove, OR

January, the same as December, in Forest Grove, Oregon, is another chilly winter month, with average temperature fluctuating between 31.8°F (-0.1°C) and 44.8°F (7.1°C).

Temperature

The coldest month is January, with an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 31.8°F (-0.1°C).

Rainfall

In Forest Grove, Oregon, during 20 rainfall days, 7.3" (185.7mm) of precipitation is typically accumulated. Throughout the year, in Forest Grove, there are 155 rainfall days, and 45.5" (1154.6mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. January is the month with the most snowfall in Forest Grove, with 5.2" (132.1mm) of accumulated snow.

Daylight

In January, the average length of the day is 9.2h.

What is the coldest month in Forest Grove?

The coldest month in Forest Grove, Oregon, is January, with an average high-temperature of 44.8°F (7.1°C) and an average low-temperature of 31.8°F (-0.1°C).

What is the temperature in January in Forest Grove?

In January, the average high-temperature is 44.8°F (7.1°C), and the average low-temperature is 31.8°F (-0.1°C).

How much does it rain in Forest Grove in January?

In Forest Grove, Oregon, during January, the rain falls for 20 days and regularly aggregates up to 7.3" (185.7mm) of precipitation.

How much does it snow in Forest Grove in January?

In Forest Grove, in January, 5.2" (132.1mm) of snow is typically accumulated.

What is the snowiest month in Forest Grove?

January is the month with the most snowfall, with 5.2" (132.1mm) of accumulated snow.

How many hours of daylight does Forest Grove have in January?

The average length of the day in January in Forest Grove is 9.2h.
Average temperature in January - Forest Grove, OR
  • Average high temperature in January: 44.7°F

The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is January (44.7°F).

  • Average low temperature in January: 31.9°F

The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (31.9°F).

Average rainfall in January - Forest Grove, OR
  • Average rainfall in January: 7.3"

The wettest month (with the highest rainfall) is December (8.2").
The driest month (with the lowest rainfall) is July (0.4").

Average rainfall days in January - Forest Grove, 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 snowfall in January - Forest Grove, OR
  • Average snowfall in January: 5.2"

The month with the highest snowfall is January (5.2").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

Average daylight in January - Forest Grove, 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).