Washington Valley Reservoir Weather Forecast

    • 64
    • 80

    Rain Showers

    • 51
    • 72

    Mostly Sunny

    • 55
    • 72

    Mostly Sunny

    • 60
    • 78

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 60
    • 79

    Chance Rain Showers

Today 13 Sep Somerset

Patchy fog in the morning. Cloudy with Showers with a chance of Thunderstorms in the Morning, then mostly sunny in the afternoon. Some Thunderstorms may produce heavy rainfall in the morning. Locally heavy rainfall possible in the morning. Humid with Highs in the lower 80s. East Winds around 5 Mph, becoming northwest around 5 Mph in the afternoon. Chance of rain 80 percent.

Tonight 13 Sep Somerset

Mostly clear in the Evening, then partly cloudy with a chance of Showers after midnight. Humid with Lows in the lower 60s. West Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Washington Valley Reservoir Temperature Statistics

September Temperature

Somerville, Somerset Airport (5.6 miles)

  • Lowest 8 September, 2026

    51.1 °F

  • Average September

    71.1 °F

  • Highest 1 September, 2026

    87.1 °F

Climate (2021–2026)

Somerville, Somerset Airport (5.6 miles)

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  • Average Low 2021–2026

    43 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    65.7 °F
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