Harwinton Weather Forecast

    • 46
    • 62

    Mostly Cloudy

    • 44
    • 63

    Mostly Cloudy

    • 47
    • 62

    Chance Rain Showers

    • 49
    • 61

    Chance Rain Showers

    • 49
    • 61

    Chance Rain Showers

Today 22 Sep Southern Litchfield

Mostly cloudy. Highs in the mid 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 22 Sep Southern Litchfield

Mostly cloudy. Lows in the upper 40s. Northeast Winds 5 to 10 Mph.

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Harwinton Temperature Statistics

September Temperature

Oxford, Waterbury-Oxford Airport (19.9 miles)

  • Lowest 15 September, 2026

    46 °F

  • Average September

    65.4 °F

  • Highest 10 September, 2026

    82 °F

Climate (2021–2026)

Oxford, Waterbury-Oxford Airport (19.9 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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