Custer Weather Forecast

    • 40
    • 72

    Rain Showers Likely

    • 36
    • 57

    Chance Rain/Snow

    • 33
    • 48

    Chance Rain/Snow

    • 37
    • 63

    Partly Sunny

    • 43
    • 70

    Slight Chance Thunderstorms

    • 45
    • 71

    Partly Sunny

    • 46
    • 76

    Slight Chance Thunderstorms

Today 16 May Northeastern Yellowstone

Partly sunny. Slight chance of Showers early in the Afternoon, then chance of Showers and isolated Thunderstorms late in the afternoon. Highs in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of precipitation 30 percent.

Tonight 16 May Northeastern Yellowstone

Chance of rain Showers and slight chance of Thunderstorms early in the Evening, then rain Showers likely in the late evening and overnight. Chance of rain Showers after 3 am. Lows in the lower 40s. Northwest Winds 15 to 25 Mph. Chance of precipitation 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Custer Temperature Statistics

May Temperature

Billings, Billings Logan International Airport (52.2 miles)

  • Lowest 6 May, 2026

    28.7 °F

  • Average May

    58.8 °F

  • Highest 13 May, 2026

    95.6 °F

Climate (2021–Present)

Billings, Billings Logan International Airport (52.2 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    61.3 °F
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