Seymour Weather Forecast

    • 46
    • 65

    Chance Rain Showers

    • 36
    • 55

    Rain Showers

    • 30
    • 52

    Mostly Sunny

    • 39
    • 53

    Slight Chance Rain Showers

    • 41
    • 63

    Partly Sunny

    • 44
    • 65

    Partly Sunny

Today 18 Apr Northern New Haven

Partly sunny. Highs in the mid 60s. Northeast Winds around 5 Mph, becoming southeast this afternoon.

Tonight 18 Apr Northern New Haven

Mostly cloudy. A slight chance of Showers after midnight. Patchy fog after midnight. Lows in the mid 40s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seymour Temperature Statistics

April Temperature

Oxford, Waterbury-Oxford Airport (6.2 miles)

  • Lowest 8 April, 2026

    23 °F

  • Average April

    48.4 °F

  • Highest 15 April, 2026

    82 °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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