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Climate & Weather Averages in Happy Valley, USA

Currently: 54 °F. Light rain. Mostly cloudy. (Weather station: Portland International Airport, USA). See more current weather

Annual Weather Averages Near Happy Valley

Averages are for Portland International Airport, which is 10 miles from Happy Valley.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Happy Valley

High Temp: 82 °F

Low Temp: 36 °F

Mean Temp: 55 °F

Precipitation: 3.13"

Humidity: 71%

Dew Point: 45 °F

Wind: 11 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

January Climate & Weather Averages in Happy Valley

High Temp: 47 °F

Low Temp: 37 °F

Mean Temp: 42 °F

Precipitation: 5.20"

Humidity: 82%

Dew Point: 36 °F

Wind: 15 mph

Pressure: 30.11 "Hg

Visibility: 9 mi

February Climate & Weather Averages in Happy Valley

High Temp: 51 °F

Low Temp: 37 °F

Mean Temp: 44 °F

Precipitation: 3.82"

Humidity: 77%

Dew Point: 36 °F

Wind: 13 mph

Pressure: 30.10 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Happy Valley

High Temp: 56 °F

Low Temp: 40 °F

Mean Temp: 48 °F

Precipitation: 3.90"

Humidity: 73%

Dew Point: 39 °F

Wind: 11 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

April Climate & Weather Averages in Happy Valley

High Temp: 61 °F

Low Temp: 44 °F

Mean Temp: 52 °F

Precipitation: 2.79"

Humidity: 69%

Dew Point: 42 °F

Wind: 10 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Happy Valley

High Temp: 69 °F

Low Temp: 50 °F

Mean Temp: 59 °F

Precipitation: 2.45"

Humidity: 65%

Dew Point: 46 °F

Wind: 9 mph

Pressure: 30.04 "Hg

Visibility: 11 mi

June Climate & Weather Averages in Happy Valley

High Temp: 74 °F

Low Temp: 54 °F

Mean Temp: 64 °F

Precipitation: 1.63"

Humidity: 63%

Dew Point: 50 °F

Wind: 10 mph

Pressure: 30.04 "Hg

Visibility: 11 mi

July Climate & Weather Averages in Happy Valley

High Temp: 81 °F

Low Temp: 58 °F

Mean Temp: 70 °F

Precipitation: 0.53"

Humidity: 58%

Dew Point: 54 °F

Wind: 11 mph

Pressure: 30.04 "Hg

Visibility: 11 mi

August Climate & Weather Averages in Happy Valley

High Temp: 82 °F

Low Temp: 59 °F

Mean Temp: 70 °F

Precipitation: 0.55"

Humidity: 59%

Dew Point: 54 °F

Wind: 10 mph

Pressure: 30.01 "Hg

Visibility: 11 mi

September Climate & Weather Averages in Happy Valley

High Temp: 76 °F

Low Temp: 54 °F

Mean Temp: 65 °F

Precipitation: 1.76"

Humidity: 65%

Dew Point: 52 °F

Wind: 9 mph

Pressure: 30.02 "Hg

Visibility: 10 mi

October Climate & Weather Averages in Happy Valley

High Temp: 64 °F

Low Temp: 47 °F

Mean Temp: 55 °F

Precipitation: 3.53"

Humidity: 76%

Dew Point: 47 °F

Wind: 9 mph

Pressure: 30.08 "Hg

Visibility: 9 mi

November Climate & Weather Averages in Happy Valley

High Temp: 53 °F

Low Temp: 41 °F

Mean Temp: 47 °F

Precipitation: 5.48"

Humidity: 82%

Dew Point: 41 °F

Wind: 12 mph

Pressure: 30.10 "Hg

Visibility: 9 mi

December Climate & Weather Averages in Happy Valley

High Temp: 46 °F

Low Temp: 36 °F

Mean Temp: 41 °F

Precipitation: 5.89"

Humidity: 83%

Dew Point: 36 °F

Wind: 14 mph

Pressure: 30.13 "Hg

Visibility: 9 mi

Quick Climate Info

Hottest MonthAugust (70 °F avg)
Coldest MonthDecember (41 °F avg)
Wettest MonthDecember (5.89" avg)
Windiest MonthJanuary (15 mph avg)
Annual precip.37.53" (per year)

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