Seymour Weather Forecast

    • 42
    • 64

    Decreasing Clouds

    • 46
    • 64

    Mostly Sunny

    • 49
    • 61

    Rain Showers

    • 49
    • 65

    Rain Showers Likely

    • 51
    • 69

    Chance Rain Showers

    • 54
    • 76

    Partly Sunny

Today 11 May Northern New Haven

Partly sunny late this Morning, then becoming mostly cloudy. Highs in the lower 60s. North Winds 5 to 10 Mph.

Tonight 11 May Northern New Haven

Mostly cloudy. Lows in the lower 40s. Northwest Winds 5 to 10 Mph.

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Seymour Temperature Statistics

May Temperature

Oxford, Waterbury-Oxford Airport (6.2 miles)

  • Lowest 1 May, 2026

    39 °F

  • Average May

    53.1 °F

  • Highest 5 May, 2026

    75 °F

Climate (2021–Present)

Oxford, Waterbury-Oxford Airport (6.2 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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