Harwinton Weather Forecast

    • 67
    • 86

    Mostly Sunny

    • 70
    • 91

    Slight Chance Thunderstorms

    • 48
    • 87

    Rain Showers Likely

    • 45
    • 66

    Partly Sunny

    • 44
    • 66

    Rain Showers Likely

    • 46
    • 59

    Rain Showers Likely

    • 49
    • 64

    Chance Rain Showers

Today 18 May Southern Litchfield

Sunny, hot. Near steady temperature in the mid 80s. South Winds around 10 Mph.

Tonight 18 May Southern Litchfield

Mostly clear. Lows in the mid 60s. South Winds 5 to 10 Mph in the Evening, becoming light and variable.

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Harwinton Temperature Statistics

May Temperature

Oxford, Waterbury-Oxford Airport (19.9 miles)

  • Lowest 1 May, 2026

    39 °F

  • Average May

    54 °F

  • Highest 5 May, 2026

    75 °F

Climate (2021–Present)

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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