Casper Mountain Weather Forecast

    • 51
    • 63

    Chance Thunderstorms

    • 51
    • 67

    Slight Chance Thunderstorms

    • 51
    • 69

    Chance Rain Showers

    • 45
    • 60

    Chance Rain Showers

    • 45
    • 61

    Slight Chance Thunderstorms

    • 45
    • 61

    Chance Thunderstorms

Today 27 May Casper Mountain

Mostly cloudy. A chance of Showers and Thunderstorms in the afternoon. Highs in the upper 60s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 40 percent.

Tonight 27 May Casper Mountain

Mostly cloudy. Near steady temperature in the lower 50s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casper Mountain Temperature Statistics

May Temperature

Casper, Natrona County International Airport (13 miles)

  • Lowest 6 May, 2026

    18.6 °F

  • Average May

    50.9 °F

  • Highest 13 May, 2026

    92.6 °F

Climate (2021–Present)

Casper, Natrona County International Airport (13 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    61.5 °F
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