Roseau Weather Forecast

    • 54
    • 71

    Decreasing Clouds

    • 57
    • 79

    Mostly Sunny

    • 63
    • 85

    Partly Sunny

    • 56
    • 81

    Chance Thunderstorms

    • 50
    • 72

    Partly Sunny

    • 45
    • 65

    Partly Sunny

Today 18 Aug Roseau

Mostly cloudy. A slight chance of Showers in the morning. Highs 70 to 75. North Winds 5 to 15 Mph. Chance of rain 20 percent.

Tonight 18 Aug Roseau

Partly cloudy. Lows in the mid 50s. North Winds around 5 Mph in the evening becoming light and variable.

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Roseau Temperature Statistics

August Temperature

Roseau, Roseau Municipal Airport/Rudy Billberg Field (2.5 miles)

  • Lowest 1 August, 2025

    48.2 °F

  • Average August

    67 °F

  • Highest 7 August, 2025

    86 °F

Climate (2020–Present)

Roseau, Roseau Municipal Airport/Rudy Billberg Field (2.5 miles)

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  • Average Low 2020–2025

    32.1 °F

  • Average 2020–2025

    42 °F

  • Average High 2020–2025

    51.3 °F
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