Lake Ronkonkoma Weather Forecast

    • 30
    • 47

    Chance Rain

    • 18
    • 37

    Snow Likely

    • 8
    • 26

    Partly Sunny

    • 8
    • 20

    Partly Sunny

    • 10
    • 21

    Partly Sunny

    • 19
    • 29

    Partly Sunny

Today 18 Jan Northwest Suffolk

Mostly cloudy. A slight chance of rain Showers in the Morning, then rain likely in the afternoon. Highs in the mid 40s. South Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 18 Jan Northwest Suffolk

Mostly cloudy. A slight chance of rain in the evening. Lows around 30. Southwest Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 20 percent.

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  • Temperature Real-Time

Lake Ronkonkoma Temperature Statistics

January Temperature

Islip, Long Island Mac Arthur Airport (3.1 miles)

  • Lowest 7 January, 2025

    19.9 °F

  • Average January

    32.6 °F

  • Highest 1 January, 2025

    54.6 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (3.1 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    62.8 °F
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