Neff Reservoir Weather Forecast

    • 31
    • 54

    Rain Showers

    • 7
    • 46

    Chance Snow Showers

    • 9
    • 27

    Mostly Sunny

    • 20
    • 40

    Partly Sunny

    • 24
    • 45

    Mostly Cloudy

    • 24
    • 50

    Mostly Cloudy

Today 26 Dec Natrona County Lower Elevations

Partly cloudy and windy. Highs around 50. Southwest Winds 25 to 35 Mph with Gusts up to 45 Mph.

Tonight 26 Dec Natrona County Lower Elevations

Mostly clear and breezy. Lows in the mid 30s. Southwest Winds 15 to 25 Mph with Gusts up to 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Neff Reservoir Temperature Statistics

December Temperature

Casper, Natrona County International Airport (37.3 miles)

  • Lowest 1 December, 2025

    6.1 °F

  • Average December

    38.3 °F

  • Highest 23 December, 2025

    62.1 °F

Climate (2020–Present)

Casper, Natrona County International Airport (37.3 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    60.5 °F
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