Lake Jefferson Weather Forecast

    • 67
    • 87

    Rain Showers

    • 63
    • 82

    Rain Showers

    • 59
    • 82

    Partly Sunny

    • 55
    • 80

    Chance Thunderstorms

    • 55
    • 76

    Mostly Sunny

    • 62
    • 82

    Mostly Cloudy

    • 66
    • 88

    Chance Thunderstorms

Today 30 Jun Sullivan

Partly sunny. Highs in the upper 80s. South Winds around 5 Mph.

Tonight 30 Jun Sullivan

Mostly cloudy with a chance of Thunderstorms. A chance of Showers this Evening, then Showers likely after midnight. Lows in the upper 60s. South Winds around 5 Mph. Chance of rain 70 percent.

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Lake Jefferson Temperature Statistics

June Temperature

Monticello, Sullivan County International Airport (7.5 miles)

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Climate (2020–Present)

Monticello, Sullivan County International Airport (7.5 miles)

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  • Average Low 2020–2024

    38.6 °F

  • Average 2020–2024

    47.8 °F

  • Average High 2020–2024

    57.3 °F
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