Winthrop Weather Forecast

    • 53
    • 70

    Mostly Cloudy

    • 52
    • 66

    Chance Rain

    • 50
    • 61

    Rain

    • 51
    • 57

    Rain

    • 52
    • 61

    Slight Chance Rain Showers

    • 52
    • 71

    Mostly Cloudy

    • 54
    • 73

    Partly Sunny

Today 25 Sep Kennebec

Partly sunny. Highs in the lower 70s. Northeast Winds around 10 Mph.

Tonight 25 Sep Kennebec

Cloudy. Lows in the lower 50s. Light and variable Winds, becoming northeast around 10 Mph with Gusts up to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winthrop Temperature Statistics

September Temperature

Augusta, Augusta State Airport (8.7 miles)

  • Lowest 23 September, 2026

    42.1 °F

  • Average September

    61.7 °F

  • Highest 10 September, 2026

    82.7 °F

Climate (2021–2026)

Augusta, Augusta State Airport (8.7 miles)

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  • Average Low 2021–2026

    40.2 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    57.7 °F
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