Montevideo Weather Forecast

    • 61
    • 75

    Rain Showers Likely

    • 57
    • 70

    Rain Showers Likely

    • 58
    • 71

    Slight Chance Thunderstorms

    • 59
    • 79

    Slight Chance Thunderstorms

    • 54
    • 77

    Partly Sunny

    • 52
    • 74

    Mostly Sunny

Today 18 Sep Chippewa

Mostly cloudy. Slight chance of Thunderstorms until Afternoon, then chance of Thunderstorms late in the afternoon. Highs in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of Thunderstorms 30 percent.

Tonight 18 Sep Chippewa

Mostly cloudy. Chance of Thunderstorms in the Evening, then Showers likely and chance of Thunderstorms after midnight. Lows in the lower 60s. East Winds around 5 Mph. Chance of precipitation 60 percent.

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Montevideo Temperature Statistics

September Temperature

Montevideo-Chippewa County Airport (1.9 miles)

  • Lowest 4 September, 2025

    41 °F

  • Average September

    63.1 °F

  • Highest 14 September, 2025

    87.8 °F

Climate (2020–Present)

Montevideo-Chippewa County Airport (1.9 miles)

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  • Average Low 2020–2025

    36.6 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    56 °F
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