Sparta Weather Forecast

    • 58
    • 84

    Rain Showers

    • 46
    • 88

    Rain Showers

    • 40
    • 58

    Rain Showers Likely

    • 36
    • 55

    Mostly Cloudy

    • 42
    • 65

    Partly Sunny

    • 46
    • 68

    Mostly Cloudy

    • 51
    • 73

    Chance Thunderstorms

Today 16 May Knox

Mostly cloudy with a 20 percent chance of Showers. Near steady temperature in the lower 80s. East Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 16 May Knox

Mostly cloudy with a chance of Thunderstorms. A chance of Showers in the Evening, then Showers likely after midnight. Lows in the upper 50s. East 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

Sparta Temperature Statistics

May Temperature

Yankton, Chan Gurney Municipal Airport (34.8 miles)

  • Lowest 6 May, 2026

    30 °F

  • Average May

    57.4 °F

  • Highest 11 May, 2026

    86 °F

Climate (2021–Present)

Yankton, Chan Gurney Municipal Airport (34.8 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
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