Washington Valley Reservoir Weather Forecast

    • 68
    • 86

    Slight Chance Thunderstorms

    • 66
    • 91

    Chance Rain Showers

    • 62
    • 76

    Mostly Cloudy

    • 63
    • 77

    Chance Rain Showers

    • 63
    • 78

    Chance Rain Showers

    • 60
    • 78

    Partly Sunny

    • 61
    • 82

    Partly Sunny

Today 16 Aug Somerset

Mostly sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the upper 80s. Light and variable Winds, becoming south around 5 Mph this afternoon. Chance of rain 20 percent.

Tonight 16 Aug Somerset

Partly cloudy with a slight chance of Showers and Thunderstorms this Evening, then mostly clear after midnight. Lows in the upper 60s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Valley Reservoir Temperature Statistics

August Temperature

Somerville, Somerset Airport (5.6 miles)

  • Lowest 9 August, 2025

    52.6 °F

  • Average August

    73 °F

  • Highest 12 August, 2025

    93.7 °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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