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Casper city, Wyoming

Official LSAD Designation: Casper city • Census GEOID: 5613150 • Natrona County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Casper city.

Reference Weather Station: CASPER WWTP, WY US (ID: USC00481569) • Located 2.0 miles from community center • Elevation: 1,553.6 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 38.2° 16.5° 27.3° 0.44"
February 39.6° 17.6° 28.6° 0.63"
March 49.0° 24.7° 36.9° 0.97"
April 56.6° 30.8° 43.7° 1.47"
May 67.1° 40.6° 53.8° 2.74"
June 79.3° 49.5° 64.4° 1.55"
July 88.3° 56.4° 72.3° 1.21"
August 86.5° 55.0° 70.8° 1.02"
September 76.0° 43.8° 59.9° 1.05"
October 60.7° 33.1° 46.9° 1.25"
November 47.5° 25.2° 36.4° 0.45"
December 37.8° 17.2° 27.5° 0.65"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station CASPER WWTP, WY US (ID: USC00481569) • 2.0 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at CASPER WWTP, WY US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 29.0 38.3 47.5 56.8 66.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2013: Annual mean 47.1°F 2014: Annual mean 46.2°F 2017: Annual mean 47.6°F 2018: Annual mean 46.8°F 2019: Annual mean 45.0°F 2020: Annual mean 47.6°F 2021: Annual mean 48.2°F 2022: Annual mean 46.9°F 2023: Annual mean 46.6°F 2024: Annual mean 49.6°F 2010: Annual mean of daily highs 60.1°F 2013: Annual mean of daily highs 59.8°F 2014: Annual mean of daily highs 59.3°F 2016: Annual mean of daily highs 61.4°F 2017: Annual mean of daily highs 59.9°F 2018: Annual mean of daily highs 59.9°F 2019: Annual mean of daily highs 57.5°F 2020: Annual mean of daily highs 60.7°F 2021: Annual mean of daily highs 61.1°F 2022: Annual mean of daily highs 59.9°F 2023: Annual mean of daily highs 58.7°F 2024: Annual mean of daily highs 62.7°F 2025: Annual mean of daily highs 62.0°F 2013: Annual mean of daily lows 34.4°F 2014: Annual mean of daily lows 33.1°F 2017: Annual mean of daily lows 35.4°F 2018: Annual mean of daily lows 33.6°F 2019: Annual mean of daily lows 32.6°F 2020: Annual mean of daily lows 34.4°F 2021: Annual mean of daily lows 35.3°F 2022: Annual mean of daily lows 34.0°F 2023: Annual mean of daily lows 34.5°F 2024: Annual mean of daily lows 36.4°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 Unavailable 60.1 Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 47.1 59.8 34.4
2014 46.2 59.3 33.1
2015 Unavailable Unavailable Unavailable
2016 Unavailable 61.4 Unavailable
2017 47.6 59.9 35.4
2018 46.8 59.9 33.6
2019 45.0 57.5 32.6
2020 47.6 60.7 34.4
2021 48.2 61.1 35.3
2022 46.9 59.9 34.0
2023 46.6 58.7 34.5
2024 49.6 62.7 36.4
2025 Unavailable 62.0 Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.