Thomaston Weather Forecast

    • 48
    • 76

    Partly Sunny

    • 50
    • 66

    Partly Sunny

    • 52
    • 62

    Rain

    • 48
    • 64

    Chance Rain Showers

    • 44
    • 58

    Chance Rain Showers

    • 45
    • 59

    Chance Rain Showers

Today 18 Sep Southern Litchfield

Sunny. Highs in the upper 70s. North Winds 5 to 10 Mph.

Tonight 18 Sep Southern Litchfield

Mostly clear in the Evening, then becoming partly cloudy. Much cooler. Less humid with Lows in the upper 40s. North Winds around 5 Mph.

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Thomaston Temperature Statistics

September Temperature

Oxford, Waterbury-Oxford Airport (13 miles)

  • Lowest 15 September, 2026

    46 °F

  • Average September

    65.7 °F

  • Highest 10 September, 2026

    82 °F

Climate (2021–2026)

Oxford, Waterbury-Oxford Airport (13 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.4 °F
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