Middlesex Weather Forecast

    • 20
    • 38

    Mostly Sunny

    • 30
    • 39

    Mostly Cloudy

    • 33
    • 47

    Slight Chance Rain

    • 32
    • 44

    Mostly Cloudy

    • 40
    • 45

    Chance Rain Showers

    • 36
    • 54

    Slight Chance Rain Showers

Today 21 Dec Cumberland

Sunny. Highs in the upper 30s. Temperature falling into the lower 30s this afternoon. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Cumberland

Mostly clear. Cooler with Lows around 20. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Middlesex Temperature Statistics

December Temperature

Harrisburg, Capital City Airport (14.9 miles)

  • Lowest 16 December, 2025

    9 °F

  • Average December

    29.6 °F

  • Highest 18 December, 2025

    46.9 °F

Climate (2020–Present)

Harrisburg, Capital City Airport (14.9 miles)

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  • Average Low 2020–2025

    47.8 °F

  • Average 2020–2025

    57.1 °F

  • Average High 2020–2025

    66.5 °F
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