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

Monthly 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). 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). Weather in January »
The last month of the winter, February, is also a frosty month in Forest Grove, Oregon, with average temperature ranging between max 49.8°F (9.9°C) and min 33.6°F (0.9°C). In February, the average high-temperature is practically the same as in January - a still frosty 49.8°F (9.9°C). Weather in February »

March, the first month of the spring, in Forest Grove, is a moderate month, with average temperature fluctuating between 55.4°F (13°C) and 36°F (2.2°C). In Forest Grove, the average high-temperature in March marginally rises, from a frosty 49.8°F (9.9°C) in February, to a mild 55.4°F (13°C). Weather in March »

April in Forest Grove, Oregon, is an enjoyable spring month, with average temperature ranging between min 38.8°F (3.8°C) and max 61.9°F (16.6°C). In April, the average high-temperature slightly increases, from a moderate 55.4°F (13°C) in March, to an enjoyable 61.9°F (16.6°C). Weather in April »

The last month of the spring, May, is an agreeable month in Forest Grove, Oregon, with average temperature varying between 68.9°F (20.5°C) and 43.7°F (6.5°C). In Forest Grove, Oregon, the average high-temperature in May slightly increases, from a comfortable 61.9°F (16.6°C) in April, to a pleasant 68.9°F (20.5°C). Weather in May »

June, the first month of the summer, in Forest Grove, is a moderately hot month, with average temperature varying between 74.8°F (23.8°C) and 48.6°F (9.2°C). In Forest Grove, the average high-temperature in June marginally rises, from a pleasant 68.9°F (20.5°C) in May, to a warm 74.8°F (23.8°C). Weather in June »

July, like June, in Forest Grove, Oregon, is another warm summer month, with average temperature ranging between max 82.2°F (27.9°C) and min 51.8°F (11°C). In July, the average high-temperature slightly increases, from a moderately hot 74.8°F (23.8°C) in June, to a still warm 82.2°F (27.9°C). Weather in July »

August, the last month of the summer, in Forest Grove, is another warm month, with temperature in the range of an average high of 82.6°F (28.1°C) and an average low of 51.6°F (10.9°C). August is the warmest month, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 51.6°F (10.9°C). Weather in August »

The first month of the autumn, September, is still a warm month in Forest Grove, Oregon, with average temperature fluctuating between 76.5°F (24.7°C) and 47.7°F (8.7°C). In September, the average high-temperature slightly decreases, from a moderately hot 82.6°F (28.1°C) in August, to a still warm 76.5°F (24.7°C). Weather in September »

October, the same as September, is another comfortable autumn month in Forest Grove, Oregon, with temperature in the range of an average low of 41.5°F (5.3°C) and an average high of 64.2°F (17.9°C). In October, the average high-temperature drops, from a warm 76.5°F (24.7°C) in September, to an enjoyable 64.2°F (17.9°C). Weather in October »

November, the last month of the autumn, in Forest Grove, is another cool month, with average temperature varying between 36.9°F (2.7°C) and 52.2°F (11.2°C). In November, the average high-temperature drops, from a comfortable 64.2°F (17.9°C) in October, to a cool 52.2°F (11.2°C). Weather in November »

The first month of the winter, December, is also a frosty month in Forest Grove, Oregon, with average temperature ranging between min 33.6°F (0.9°C) and max 45.7°F (7.6°C). In Forest Grove, the average high-temperature slightly decreases, from a cool 52.2°F (11.2°C) in November, to a frosty 45.7°F (7.6°C). Weather in December »

What is the coldest month in Forest Grove?

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).

How much does it rain in Forest Grove?

In Forest Grove, during the entire year, the rain falls for 155 days and collects up to 45.5" (1154.6mm) of precipitation.

When does it snow in Forest Grove?

Months with snowfall in Forest Grove are January through March, November and December.

How much does it snow in Forest Grove?

Throughout the year, in Forest Grove, 10.9" (276.9mm) of snow is accumulated.

What is the snowiest month in Forest Grove?

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

When are the longest days in Forest Grove?

With an average of 15.6h of daylight, June has the longest days of the year in Forest Grove, Oregon.

What is the driest month in Forest Grove?

July is the month with the least rainfall. Rain falls for 3 days and accumulates 0.4" (10.2mm) of precipitation.

What is the warmest month in Forest Grove?

August is the warmest month in Forest Grove, Oregon, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 51.6°F (10.9°C).

What is the rainiest month in Forest Grove?

December is the month with the most rainfall in Forest Grove, Oregon. Rain falls for 20 days and accumulates 8.2" (208.5mm) of precipitation.

What is the month with the shortest days in Forest Grove?

December has the shortest days of the year in Forest Grove, with an average of 8.8h of daylight.
Average temperature - Forest Grove, OR
Average rainfall - Forest Grove, OR
Average rainfall days - Forest Grove, 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 snowfall - Forest Grove, OR
Average daylight - Forest Grove, OR

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