Harwinton Weather Forecast

    • 65
    • 85

    Slight Chance Thunderstorms

    • 70
    • 95

    Chance Thunderstorms

    • 72
    • 98

    Mostly Sunny

    • 69
    • 95

    Slight Chance Thunderstorms

    • 67
    • 92

    Chance Thunderstorms

    • 64
    • 87

    Chance Thunderstorms

Today 30 Jun Southern Litchfield

Mostly sunny. Hot with Highs in the upper 80s. Southwest Winds 5 to 10 Mph.

Tonight 30 Jun Southern Litchfield

Partly cloudy. Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

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Harwinton Temperature Statistics

June Temperature

Oxford, Waterbury-Oxford Airport (19.9 miles)

  • Lowest 2 June, 2026

    42.1 °F

  • Average June

    67.8 °F

  • Highest 11 June, 2026

    88 °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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