Harwinton Weather Forecast

    • 59
    • 77

    Increasing Clouds

    • 67
    • 79

    Chance Rain Showers

    • 58
    • 79

    Chance Rain Showers

    • 52
    • 72

    Mostly Sunny

    • 57
    • 74

    Partly Sunny

    • 59
    • 77

    Slight Chance Rain Showers

Today 8 Sep Southern Litchfield

Sunny. Highs around 80. Northwest Winds around 5 Mph.

Tonight 8 Sep Southern Litchfield

Partly cloudy. Near steady temperature in the upper 50s. Northwest Winds around 5 Mph.

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Harwinton Temperature Statistics

September Temperature

Oxford, Waterbury-Oxford Airport (19.9 miles)

  • Lowest 5 September, 2026

    57.9 °F

  • Average September

    67.9 °F

  • Highest 3 September, 2026

    80.1 °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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