Washington Valley Reservoir Weather Forecast

    • 15
    • 38

    Gradual Clearing

    • 24
    • 31

    Mostly Cloudy

    • 25
    • 39

    Partly Sunny

    • 21
    • 40

    Mostly Cloudy

    • 14
    • 29

    Partly Sunny

    • 25
    • 34

    Mostly Cloudy

Today 4 Dec Somerset

Partly sunny. Highs in the upper 30s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 4 Dec Somerset

Mostly clear. Cold with Lows around 15. North Winds 5 to 10 Mph. Gusts up to 30 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Valley Reservoir Temperature Statistics

December Temperature

Somerville, Somerset Airport (5.6 miles)

  • Lowest 1 December, 2025

    23 °F

  • Average December

    34.9 °F

  • Highest 1 December, 2025

    43 °F

Climate (2020–Present)

Somerville, Somerset Airport (5.6 miles)

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  • Average Low 2020–2025

    43.3 °F

  • Average 2020–2025

    54.4 °F

  • Average High 2020–2025

    65.8 °F
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