Mills Weather Forecast

    • 40
    • 62

    Rain Showers Likely

    • 41
    • 68

    Mostly Sunny

    • 47
    • 75

    Slight Chance Thunderstorms

    • 46
    • 77

    Mostly Sunny

    • 48
    • 79

    Mostly Sunny

    • 51
    • 80

    Mostly Sunny

Today 20 Sep Natrona County Lower Elevations

Mostly cloudy. Showers with a slight chance of Thunderstorms this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Windy with Highs in the lower 60s. West Winds 25 to 30 Mph with Gusts up to 45 Mph, becoming northwest 10 to 15 Mph with Gusts up to 30 Mph this afternoon. Chance of rain 80 percent.

Tonight 20 Sep Natrona County Lower Elevations

Mostly cloudy in the Evening, then becoming partly cloudy. Lows around 40. Northwest Winds around 10 Mph with Gusts up to 20 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mills Temperature Statistics

September Temperature

Casper, Natrona County International Airport (6.2 miles)

  • Lowest 9 September, 2026

    36.6 °F

  • Average September

    65.7 °F

  • Highest 5 September, 2026

    91.7 °F

Climate (2021–2026)

Casper, Natrona County International Airport (6.2 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    61.6 °F
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