Winthrop Weather Forecast

    • 47
    • 70

    Sunny

    • 54
    • 74

    Chance Rain Showers

    • 58
    • 69

    Rain Showers Likely

    • 46
    • 72

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 55
    • 75

    Slight Chance Rain Showers

    • 53
    • 72

    Chance Rain Showers

Today 11 Sep Kennebec

Sunny. Highs around 70. Northwest Winds around 10 Mph with Gusts up to 25 Mph.

Tonight 11 Sep Kennebec

Clear. Patchy fog after midnight. Lows in the mid 40s. Northwest Winds around 10 Mph in the Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

September Temperature

Augusta, Augusta State Airport (8.7 miles)

  • Lowest 9 September, 2026

    46.9 °F

  • Average September

    64.5 °F

  • Highest 4 September, 2026

    80.7 °F

Climate (2021–2026)

Augusta, Augusta State Airport (8.7 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    57.7 °F
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