Washington Township Weather Forecast

    • 39
    • 42

    Rain

    • 23
    • 53

    Rain Likely

    • 29
    • 35

    Mostly Cloudy

    • 22
    • 42

    Partly Sunny

    • 22
    • 32

    Partly Sunny

    • 29
    • 38

    Chance Rain

Today 18 Dec Morris

Patchy freezing fog in the morning. Partly sunny. Highs in the lower 40s. Southeast Winds 5 to 10 Mph.

Tonight 18 Dec Morris

Rain. Not as cool with Lows in the upper 30s. Temperature rising into the lower 50s after midnight. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to south 15 to 20 Mph with Gusts up to 45 Mph after midnight. Chance of rain near 100 percent.

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Washington Township Temperature Statistics

December Temperature

Somerville, Somerset Airport (13 miles)

  • Lowest 9 December, 2025

    7 °F

  • Average December

    29.3 °F

  • Highest 10 December, 2025

    44.1 °F

Climate (2020–Present)

Somerville, Somerset Airport (13 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    65.7 °F
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