Custer Weather Forecast

    • 70
    • 95

    Rain Showers Likely

    • 68
    • 98

    Hot

    • 68
    • 99

    Slight Chance Thunderstorms

    • 64
    • 91

    Partly Sunny

    • 65
    • 89

    Mostly Cloudy

    • 67
    • 93

    Slight Chance Thunderstorms

    • 66
    • 94

    Chance Rain Showers

Today 17 Jul Northeastern Yellowstone

Mostly sunny. Highs in the upper 90s. East Winds 5 to 15 Mph.

Tonight 17 Jul Northeastern Yellowstone

Chance of Thunderstorms in the evening. Showers likely through the night. Slight chance of Thunderstorms overnight. Lows in the upper 60s. East Winds 5 to 15 Mph in the evening shifting to the north 5 to 10 Mph overnight. Chance of precipitation 60 percent.

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  • Temperature Real-Time

Custer Temperature Statistics

July Temperature

Billings, Billings Logan International Airport (52.2 miles)

  • Lowest 1 July, 2026

    53.7 °F

  • Average July

    77.3 °F

  • Highest 12 July, 2026

    111.7 °F

Climate (2021–2026)

Billings, Billings Logan International Airport (52.2 miles)

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  • Average Low 2021–2026

    39 °F

  • Average 2021–2026

    49.9 °F

  • Average High 2021–2026

    61.2 °F
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