Crofton Weather Forecast

    • 72
    • 90

    Rain Showers Likely

    • 63
    • 85

    Chance Rain Showers

    • 57
    • 80

    Mostly Sunny

    • 66
    • 84

    Mostly Sunny

    • 61
    • 88

    Mostly Sunny

    • 58
    • 79

    Chance Thunderstorms

    • 57
    • 77

    Rain Showers Likely

Today 7 Sep Knox

Mostly sunny. Warmer with Highs in the lower 90s. South Winds around 20 Mph with Gusts up to 35 Mph. Heat index Values up to 101.

Tonight 7 Sep Knox

Mostly cloudy with a chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Lows around 70. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Crofton Temperature Statistics

September Temperature

Yankton, Chan Gurney Municipal Airport (13.7 miles)

  • Lowest 2 September, 2026

    66.9 °F

  • Average September

    79.7 °F

  • Highest 4 September, 2026

    95 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (13.7 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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