Upper Lake Weather Forecast

    • 38
    • 54

    Rain Showers

    • 30
    • 51

    Chance Rain Showers

    • 40
    • 51

    Slight Chance Rain Showers

    • 43
    • 58

    Partly Sunny

    • 45
    • 64

    Partly Sunny

    • 44
    • 59

    Partly Sunny

Today 19 Apr Northwest Suffolk

Showers. Patchy fog late this morning. Breezy with Highs in the mid 50s. North Winds 10 to 15 Mph, becoming northwest 15 to 25 Mph with Gusts up to 35 Mph this afternoon. Chance of rain near 100 percent.

Tonight 19 Apr Northwest Suffolk

Partly cloudy with a chance of Showers in the Evening, then mostly clear after midnight. Lows around 40. West Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening. Chance of rain 50 percent.

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Upper Lake Temperature Statistics

April Temperature

Shirley, Brookhaven Airport (3.7 miles)

  • Lowest 9 April, 2026

    24.1 °F

  • Average April

    50.6 °F

  • Highest 16 April, 2026

    81 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (3.7 miles)

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  • Average Low 2021–2026

    46.2 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    62.6 °F
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