Big Sky Weather Forecast

    • 59
    • 90

    Slight Chance Thunderstorms

    • 55
    • 85

    Thunderstorms

    • 55
    • 82

    Rain Showers

    • 53
    • 79

    Rain Showers

    • 52
    • 78

    Rain Showers

    • 50
    • 77

    Rain Showers Likely

    • 49
    • 78

    Chance Thunderstorms

Today 13 Sep Estancia Valley

Partly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Southwest Winds around 15 Mph. Chance of rain 20 percent.

Tonight 13 Sep Estancia Valley

Isolated Thunderstorms in the evening. Partly cloudy with isolated Showers. Lows around 60. South Winds around 15 Mph in the evening. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Sky Temperature Statistics

September Temperature

Moriarty Municipal Airport (12.4 miles)

  • Lowest 11 September, 2026

    42.8 °F

  • Average September

    72.6 °F

  • Highest 11 September, 2026

    93.2 °F

Climate (2021–2026)

Moriarty Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    34.9 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    69.9 °F
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