Watertown Weather Forecast

    • 31
    • 77

    Slight Chance Snow

    • 25
    • 43

    Partly Sunny

    • 35
    • 51

    Mostly Cloudy

    • 34
    • 55

    Mostly Cloudy

    • 33
    • 62

    Mostly Cloudy

    • 20
    • 44

    Mostly Cloudy

Today 21 Mar Codington

Mostly sunny. Warmer with Highs in the upper 70s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 21 Mar Codington

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain and snow after midnight. Colder with Lows around 30. North Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 20 percent.

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Watertown Temperature Statistics

March Temperature

Watertown, Watertown Municipal Airport (1.2 miles)

  • Lowest 16 March, 2026

    -1.4 °F

  • Average March

    30.3 °F

  • Highest 19 March, 2026

    69.1 °F

Climate (2021–Present)

Watertown, Watertown Municipal Airport (1.2 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    55.9 °F
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