Seymour Weather Forecast

    • 39
    • 53

    Increasing Clouds

    • 40
    • 53

    Chance Rain Showers

    • 43
    • 67

    Partly Sunny

    • 40
    • 62

    Partly Sunny

    • 40
    • 57

    Chance Rain Showers

    • 41
    • 59

    Chance Rain Showers

Today 21 Apr Northern New Haven

Widespread frost this morning. Sunny. Highs in the lower 50s. North Winds around 5 Mph, becoming southwest this afternoon.

Tonight 21 Apr Northern New Haven

Partly cloudy in the Evening, then mostly cloudy with a chance of Showers after midnight. Lows in the upper 30s. South Winds 5 to 10 Mph. Chance of rain 50 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

    51.3 °F

  • Highest 16 April, 2026

    84 °F

Climate (2021–Present)

Oxford, Waterbury-Oxford Airport (6.2 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.4 °F
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