Steffan Reservoir Weather Forecast

    • 62
    • 79

    Breezy

    • 60
    • 84

    Partly Sunny

    • 65
    • 86

    Mostly Sunny

    • 65
    • 89

    Rain Showers Likely

    • 59
    • 75

    Rain Showers

    • 60
    • 77

    Chance Thunderstorms

    • 64
    • 82

    Partly Sunny

Today 31 Jul Knox

Mostly sunny and windy. Highs in the upper 70s. North Winds 20 to 30 Mph with Gusts up to 45 Mph.

Tonight 31 Jul Knox

Partly cloudy. Lows in the lower 60s. North Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Steffan Reservoir Temperature Statistics

July Temperature

Yankton, Chan Gurney Municipal Airport (11.2 miles)

  • Lowest 22 July, 2026

    59 °F

  • Average July

    78.6 °F

  • Highest 25 July, 2026

    98.1 °F

Climate (2021–2026)

Yankton, Chan Gurney Municipal Airport (11.2 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    61.8 °F
Get WillyWeather+ to remove ads