Grays Lake National Wildlife Refuge Weather Forecast

    • 35
    • 65

    Mostly Sunny

    • 39
    • 71

    Partly Sunny

    • 42
    • 71

    Mostly Sunny

    • 42
    • 66

    Partly Sunny

    • 40
    • 69

    Chance Rain

    • 33
    • 57

    Chance Rain Showers

    • 33
    • 58

    Mostly Sunny

Today 23 Sep Blackfoot Mountains

Sunny with a slight chance of rain. Highs 58 to 65.

Tonight 23 Sep Blackfoot Mountains

Mostly clear. Lows 36 to 46.

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Grays Lake National Wildlife Refuge Temperature Statistics

September Temperature

Afton WY (34.2 miles)

  • Lowest 15 September, 2026

    28.4 °F

  • Average September

    55.2 °F

  • Highest 5 September, 2026

    78.8 °F

Climate (2021–2026)

Afton WY (34.2 miles)

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  • Average Low 2021–2026

    26.4 °F

  • Average 2021–2026

    39.5 °F

  • Average High 2021–2026

    52.2 °F
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