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Climate & Weather Averages in Forest Grove, Oregon, USA

Currently: 60 °F. Broken clouds. (Weather station: Portland-Hillsboro Airport, USA). See more current weather

Annual Weather Averages Near Forest Grove

Averages are for Portland-Hillsboro Airport, which is 8 miles from Forest Grove.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Forest Grove

High Temp: 82 °F

Low Temp: 34 °F

Mean Temp: 53 °F

Precipitation: 3.02"

Humidity: 75%

Dew Point: 44 °F

Wind: 7 mph

Pressure: 30.06 "Hg

Visibility: 9 mi

January Climate & Weather Averages in Forest Grove

High Temp: 47 °F

Low Temp: 34 °F

Mean Temp: 41 °F

Precipitation: 5.62"

Humidity: 87%

Dew Point: 37 °F

Wind: 7 mph

Pressure: 30.10 "Hg

Visibility: 7 mi

February Climate & Weather Averages in Forest Grove

High Temp: 51 °F

Low Temp: 34 °F

Mean Temp: 42 °F

Precipitation: 3.89"

Humidity: 82%

Dew Point: 37 °F

Wind: 7 mph

Pressure: 30.08 "Hg

Visibility: 9 mi

March Climate & Weather Averages in Forest Grove

High Temp: 56 °F

Low Temp: 37 °F

Mean Temp: 46 °F

Precipitation: 3.70"

Humidity: 78%

Dew Point: 39 °F

Wind: 8 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Forest Grove

High Temp: 61 °F

Low Temp: 40 °F

Mean Temp: 50 °F

Precipitation: 2.55"

Humidity: 73%

Dew Point: 41 °F

Wind: 8 mph

Pressure: 30.06 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Forest Grove

High Temp: 68 °F

Low Temp: 45 °F

Mean Temp: 57 °F

Precipitation: 1.95"

Humidity: 69%

Dew Point: 46 °F

Wind: 7 mph

Pressure: 30.04 "Hg

Visibility: 11 mi

June Climate & Weather Averages in Forest Grove

High Temp: 73 °F

Low Temp: 50 °F

Mean Temp: 61 °F

Precipitation: 1.30"

Humidity: 67%

Dew Point: 50 °F

Wind: 7 mph

Pressure: 30.04 "Hg

Visibility: 11 mi

July Climate & Weather Averages in Forest Grove

High Temp: 82 °F

Low Temp: 53 °F

Mean Temp: 67 °F

Precipitation: 0.37"

Humidity: 61%

Dew Point: 53 °F

Wind: 7 mph

Pressure: 30.03 "Hg

Visibility: 11 mi

August Climate & Weather Averages in Forest Grove

High Temp: 82 °F

Low Temp: 52 °F

Mean Temp: 67 °F

Precipitation: 0.46"

Humidity: 62%

Dew Point: 53 °F

Wind: 6 mph

Pressure: 30.00 "Hg

Visibility: 11 mi

September Climate & Weather Averages in Forest Grove

High Temp: 76 °F

Low Temp: 48 °F

Mean Temp: 62 °F

Precipitation: 1.46"

Humidity: 68%

Dew Point: 50 °F

Wind: 5 mph

Pressure: 30.01 "Hg

Visibility: 10 mi

October Climate & Weather Averages in Forest Grove

High Temp: 63 °F

Low Temp: 42 °F

Mean Temp: 52 °F

Precipitation: 3.19"

Humidity: 80%

Dew Point: 46 °F

Wind: 5 mph

Pressure: 30.08 "Hg

Visibility: 8 mi

November Climate & Weather Averages in Forest Grove

High Temp: 52 °F

Low Temp: 37 °F

Mean Temp: 45 °F

Precipitation: 5.34"

Humidity: 87%

Dew Point: 41 °F

Wind: 6 mph

Pressure: 30.09 "Hg

Visibility: 7 mi

December Climate & Weather Averages in Forest Grove

High Temp: 46 °F

Low Temp: 34 °F

Mean Temp: 40 °F

Precipitation: 6.39"

Humidity: 88%

Dew Point: 36 °F

Wind: 7 mph

Pressure: 30.12 "Hg

Visibility: 7 mi

Quick Climate Info

Hottest MonthAugust (67 °F avg)
Coldest MonthDecember (40 °F avg)
Wettest MonthDecember (6.39" avg)
Windiest MonthMarch (8 mph avg)
Annual precip.36.24" (per year)

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