Seymour Weather Forecast

    • 22
    • 29

    Chance Flurries

    • 23
    • 41

    Chance Flurries

    • 22
    • 40

    Slight Chance Snow

    • 13
    • 30

    Mostly Sunny

    • 26
    • 34

    Mostly Cloudy

    • 32
    • 44

    Rain Likely

    • 25
    • 43

    Chance Rain

Today 5 Dec Northern New Haven

Mostly sunny and cold. Near steady temperature in the mid 20s. Southeast Winds around 5 Mph.

Tonight 5 Dec Northern New Haven

Mostly cloudy. A slight chance of Flurries this Evening, then a chance of light snow after midnight. Lows in the lower 20s. Light and variable Winds. Chance of snow 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Seymour Temperature Statistics

December Temperature

Oxford, Waterbury-Oxford Airport (6.2 miles)

  • Lowest 1 December, 2025

    24.1 °F

  • Average December

    31.4 °F

  • Highest 1 December, 2025

    37.9 °F

Climate (2020–Present)

Oxford, Waterbury-Oxford Airport (6.2 miles)

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  • Average Low 2020–2025

    42.8 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    59.5 °F
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