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Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17, Washington, USA

Currently: 49 °F. More clouds than sun. (Weather station: Tri-Cities Airport, USA). See more current weather

Annual Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 93 °F

Low Temp: 28 °F

Mean Temp: 54 °F

Precipitation: 0.68"

Humidity: 61%

Dew Point: 39 °F

Wind: 10 mph

Pressure: 30.02 "Hg

Visibility: 12 mi

January Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 42 °F

Low Temp: 29 °F

Mean Temp: 36 °F

Precipitation: 1.09"

Humidity: 82%

Dew Point: 30 °F

Wind: 9 mph

Pressure: 30.16 "Hg

Visibility: 9 mi

February Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 49 °F

Low Temp: 29 °F

Mean Temp: 39 °F

Precipitation: 0.72"

Humidity: 73%

Dew Point: 31 °F

Wind: 10 mph

Pressure: 30.11 "Hg

Visibility: 10 mi

March Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 59 °F

Low Temp: 34 °F

Mean Temp: 46 °F

Precipitation: 0.69"

Humidity: 62%

Dew Point: 33 °F

Wind: 11 mph

Pressure: 30.04 "Hg

Visibility: 12 mi

April Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 67 °F

Low Temp: 39 °F

Mean Temp: 53 °F

Precipitation: 0.67"

Humidity: 54%

Dew Point: 37 °F

Wind: 12 mph

Pressure: 30.00 "Hg

Visibility: 13 mi

May Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 76 °F

Low Temp: 47 °F

Mean Temp: 62 °F

Precipitation: 0.75"

Humidity: 51%

Dew Point: 43 °F

Wind: 11 mph

Pressure: 29.95 "Hg

Visibility: 13 mi

June Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 83 °F

Low Temp: 54 °F

Mean Temp: 68 °F

Precipitation: 0.62"

Humidity: 47%

Dew Point: 47 °F

Wind: 11 mph

Pressure: 29.92 "Hg

Visibility: 14 mi

July Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 93 °F

Low Temp: 58 °F

Mean Temp: 75 °F

Precipitation: 0.24"

Humidity: 43%

Dew Point: 51 °F

Wind: 9 mph

Pressure: 29.91 "Hg

Visibility: 14 mi

August Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 91 °F

Low Temp: 57 °F

Mean Temp: 74 °F

Precipitation: 0.20"

Humidity: 46%

Dew Point: 51 °F

Wind: 8 mph

Pressure: 29.90 "Hg

Visibility: 13 mi

September Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 81 °F

Low Temp: 48 °F

Mean Temp: 65 °F

Precipitation: 0.31"

Humidity: 54%

Dew Point: 47 °F

Wind: 8 mph

Pressure: 29.96 "Hg

Visibility: 13 mi

October Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 66 °F

Low Temp: 40 °F

Mean Temp: 53 °F

Precipitation: 0.70"

Humidity: 65%

Dew Point: 40 °F

Wind: 8 mph

Pressure: 30.05 "Hg

Visibility: 12 mi

November Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 51 °F

Low Temp: 32 °F

Mean Temp: 42 °F

Precipitation: 1.01"

Humidity: 77%

Dew Point: 34 °F

Wind: 9 mph

Pressure: 30.12 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Pacific Northwest Region - 2-digit Hydrologic Unit Code - 17

High Temp: 41 °F

Low Temp: 28 °F

Mean Temp: 35 °F

Precipitation: 1.13"

Humidity: 82%

Dew Point: 29 °F

Wind: 8 mph

Pressure: 30.17 "Hg

Visibility: 9 mi

Quick Climate Info

Hottest MonthJuly (75 °F avg)
Coldest MonthDecember (35 °F avg)
Wettest MonthDecember (1.13" avg)
Windiest MonthApril (12 mph avg)
Annual precip.8.13" (per year)

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