Watertown Weather Forecast

    • 61
    • 84

    Mostly Sunny

    • 61
    • 86

    Chance Thunderstorms

    • 59
    • 74

    Rain Showers Likely

    • 58
    • 71

    Rain Showers Likely

    • 56
    • 69

    Chance Thunderstorms

    • 55
    • 70

    Slight Chance Rain Showers

    • 56
    • 74

    Partly Sunny

Today 15 Sep Codington

Sunny. Near steady temperature in the lower 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 15 Sep Codington

Mostly clear. Lows in the lower 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Watertown Temperature Statistics

September Temperature

Watertown, Watertown Municipal Airport (1.2 miles)

  • Lowest 7 September, 2025

    37.9 °F

  • Average September

    61.8 °F

  • Highest 11 September, 2025

    81 °F

Climate (2020–Present)

Watertown, Watertown Municipal Airport (1.2 miles)

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  • Average Low 2020–2025

    35 °F

  • Average 2020–2025

    45.2 °F

  • Average High 2020–2025

    55.6 °F
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