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Climate & Weather Averages in Casper, Wyoming, USA

Currently: 20 °F. Sunny. (Weather station: Natrona County International Airport, USA). See more current weather

Annual Weather Averages Near Casper

Averages are for Natrona County International Airport, which is 8 miles from Casper.

Based on weather reports collected during 1992–2021.

All Year Climate & Weather Averages in Casper

High Temp: 90 °F

Low Temp: 16 °F

Mean Temp: 46 °F

Precipitation: 1.07"

Humidity: 54%

Dew Point: 28 °F

Wind: 18 mph

Pressure: 29.99 "Hg

Visibility: 11 mi

January Climate & Weather Averages in Casper

High Temp: 36 °F

Low Temp: 16 °F

Mean Temp: 26 °F

Precipitation: 0.52"

Humidity: 64%

Dew Point: 15 °F

Wind: 25 mph

Pressure: 30.10 "Hg

Visibility: 11 mi

February Climate & Weather Averages in Casper

High Temp: 38 °F

Low Temp: 16 °F

Mean Temp: 27 °F

Precipitation: 0.60"

Humidity: 64%

Dew Point: 16 °F

Wind: 22 mph

Pressure: 30.06 "Hg

Visibility: 11 mi

March Climate & Weather Averages in Casper

High Temp: 49 °F

Low Temp: 23 °F

Mean Temp: 36 °F

Precipitation: 0.94"

Humidity: 58%

Dew Point: 21 °F

Wind: 20 mph

Pressure: 30.01 "Hg

Visibility: 11 mi

April Climate & Weather Averages in Casper

High Temp: 57 °F

Low Temp: 29 °F

Mean Temp: 43 °F

Precipitation: 1.42"

Humidity: 56%

Dew Point: 26 °F

Wind: 18 mph

Pressure: 29.95 "Hg

Visibility: 10 mi

May Climate & Weather Averages in Casper

High Temp: 67 °F

Low Temp: 37 °F

Mean Temp: 52 °F

Precipitation: 2.12"

Humidity: 56%

Dew Point: 36 °F

Wind: 15 mph

Pressure: 29.91 "Hg

Visibility: 11 mi

June Climate & Weather Averages in Casper

High Temp: 80 °F

Low Temp: 46 °F

Mean Temp: 63 °F

Precipitation: 1.39"

Humidity: 47%

Dew Point: 41 °F

Wind: 14 mph

Pressure: 29.87 "Hg

Visibility: 11 mi

July Climate & Weather Averages in Casper

High Temp: 90 °F

Low Temp: 53 °F

Mean Temp: 71 °F

Precipitation: 1.42"

Humidity: 41%

Dew Point: 45 °F

Wind: 11 mph

Pressure: 29.91 "Hg

Visibility: 12 mi

August Climate & Weather Averages in Casper

High Temp: 87 °F

Low Temp: 52 °F

Mean Temp: 69 °F

Precipitation: 0.88"

Humidity: 39%

Dew Point: 42 °F

Wind: 12 mph

Pressure: 29.93 "Hg

Visibility: 11 mi

September Climate & Weather Averages in Casper

High Temp: 77 °F

Low Temp: 43 °F

Mean Temp: 60 °F

Precipitation: 1.00"

Humidity: 44%

Dew Point: 35 °F

Wind: 14 mph

Pressure: 29.97 "Hg

Visibility: 11 mi

October Climate & Weather Averages in Casper

High Temp: 61 °F

Low Temp: 32 °F

Mean Temp: 46 °F

Precipitation: 1.29"

Humidity: 54%

Dew Point: 28 °F

Wind: 17 mph

Pressure: 30.03 "Hg

Visibility: 11 mi

November Climate & Weather Averages in Casper

High Temp: 47 °F

Low Temp: 23 °F

Mean Temp: 35 °F

Precipitation: 0.64"

Humidity: 57%

Dew Point: 20 °F

Wind: 22 mph

Pressure: 30.07 "Hg

Visibility: 10 mi

December Climate & Weather Averages in Casper

High Temp: 36 °F

Low Temp: 16 °F

Mean Temp: 26 °F

Precipitation: 0.65"

Humidity: 64%

Dew Point: 15 °F

Wind: 26 mph

Pressure: 30.09 "Hg

Visibility: 10 mi

Quick Climate Info

Hottest MonthJuly (71 °F avg)
Coldest MonthDecember (26 °F avg)
Wettest MonthMay (2.12" avg)
Windiest MonthDecember (26 mph avg)
Annual precip.12.87" (per year)

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