North Great River Weather Forecast

    • 59
    • 75

    Chance Thunderstorms

    • 55
    • 72

    Partly Sunny

    • 52
    • 73

    Mostly Sunny

    • 53
    • 68

    Mostly Cloudy

    • 50
    • 62

    Rain Showers Likely

    • 50
    • 63

    Chance Rain Showers

Today 17 May Southwest Suffolk

Patchy fog in the morning. Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 70s. South Winds 5 to 10 Mph. Gusts up to 20 Mph in the afternoon. Chance of rain 30 percent.

Tonight 17 May Southwest Suffolk

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the upper 50s. Southwest Winds 5 to 10 Mph, becoming west after midnight. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

North Great River Temperature Statistics

May Temperature

Islip, Long Island Mac Arthur Airport (4.3 miles)

  • Lowest 1 May, 2025

    47.6 °F

  • Average May

    62.5 °F

  • Highest 11 May, 2025

    78.7 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (4.3 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    63 °F
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