Bismarck Weather Forecast

    • 61
    • 84

    Sunny

    • 66
    • 90

    Mostly Sunny

    • 70
    • 91

    Partly Sunny

    • 69
    • 88

    Rain Showers Likely

    • 66
    • 82

    Rain Showers Likely

    • 63
    • 79

    Rain Showers Likely

    • 59
    • 77

    Chance Rain Showers

Today 28 Sep Hot Spring

Mostly sunny. A slight chance of Showers in the morning. Highs in the mid 70s. Chance of rain 20 percent.

Tonight 28 Sep Hot Spring

Clear. Lows in the upper 50s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Bismarck Temperature Statistics

September Temperature

Hot Springs, Memorial Field Airport (11.8 miles)

  • Lowest 25 September, 2026

    58.6 °F

  • Average September

    85.1 °F

  • Highest 6 September, 2026

    104.6 °F

Climate (2021–2026)

Hot Springs, Memorial Field Airport (11.8 miles)

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  • Average Low 2021–2026

    54.8 °F

  • Average 2021–2026

    65.3 °F

  • Average High 2021–2026

    75.9 °F
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