Simpson Airport Weather Forecast

    • 57
    • 91

    Slight Chance Thunderstorms

    • 56
    • 89

    Slight Chance Thunderstorms

    • 55
    • 90

    Mostly Sunny

    • 57
    • 90

    Partly Sunny

    • 56
    • 84

    Chance Thunderstorms

    • 53
    • 79

    Rain Showers Likely

Today 20 Aug Blackfoot Mountains

Mostly sunny. A slight chance of rain Showers in the morning. Then a slight chance of Showers and Thunderstorms in the afternoon. Highs 83 to 93.

Tonight 20 Aug Blackfoot Mountains

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows 51 to 61.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Simpson Airport Temperature Statistics

August Temperature

Afton WY (40.4 miles)

  • Lowest 9 August, 2025

    32 °F

  • Average August

    61.5 °F

  • Highest 12 August, 2025

    84.2 °F

Climate (2020–Present)

Afton WY (40.4 miles)

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  • Average Low 2020–2025

    25.3 °F

  • Average 2020–2025

    38.8 °F

  • Average High 2020–2025

    51.6 °F
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