Harwinton Weather Forecast

    • 5
    • 19

    Becoming Sunny

    • 24
    • 30

    Mostly Cloudy

    • 18
    • 38

    Partly Sunny

    • 2
    • 25

    Mostly Cloudy

    • 2
    • 10

    Mostly Cloudy

    • 4
    • 13

    Chance Snow

Today 20 Jan Southern Litchfield

Sunny, cold with Highs in the lower 20s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Wind chill Values as low as zero.

Tonight 20 Jan Southern Litchfield

Mostly clear. Cold with Lows around 7 above. West Winds around 5 Mph in the Evening, becoming light and variable.

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Harwinton Temperature Statistics

January Temperature

Oxford, Waterbury-Oxford Airport (19.9 miles)

  • Lowest 1 January, 2026

    8.1 °F

  • Average January

    30.4 °F

  • Highest 9 January, 2026

    48.9 °F

Climate (2021–Present)

Oxford, Waterbury-Oxford Airport (19.9 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    59.5 °F
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