Merwin Lake Weather Forecast

    • 60
    • 76

    Rain Showers

    • 56
    • 77

    Rain Showers

    • 45
    • 70

    Mostly Sunny

    • 53
    • 71

    Partly Sunny

    • 59
    • 78

    Partly Sunny

    • 58
    • 78

    Chance Rain Showers

Today 12 Sep Western Columbia

Sunny this Morning, then becoming partly sunny. Patchy fog this morning. Highs in the upper 70s. South Winds 5 to 10 Mph.

Tonight 12 Sep Western Columbia

Mostly cloudy. Showers after midnight. Not as cool with Lows in the lower 60s. South Winds around 5 Mph. Chance of rain 80 percent.

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Merwin Lake Temperature Statistics

September Temperature

Pittsfield Municipal Airport (19.9 miles)

  • Lowest 7 September, 2026

    43.6 °F

  • Average September

    64.5 °F

  • Highest 10 September, 2026

    79 °F

Climate (2021–2026)

Pittsfield Municipal Airport (19.9 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48 °F

  • Average High 2021–2026

    57.5 °F
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