Northern Lights SPB Weather Forecast

    • 49
    • 68

    Increasing Clouds

    • 62
    • 73

    Mostly Cloudy

    • 59
    • 67

    Rain Showers Likely

    • 58
    • 74

    Mostly Sunny

    • 64
    • 79

    Mostly Sunny

    • 65
    • 82

    Mostly Cloudy

Today 18 Aug Grand Isle

Mostly sunny. Highs in the upper 60s. North Winds 10 to 15 Mph.

Tonight 18 Aug Grand Isle

Clear. Patchy dense fog. Lows in the lower 50s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Northern Lights SPB Temperature Statistics

August Temperature

Franklin County State Airport (9.9 miles)

  • Lowest 2 August, 2025

    48.4 °F

  • Average August

    72.5 °F

  • Highest 12 August, 2025

    96.3 °F

Climate (2020–Present)

Franklin County State Airport (9.9 miles)

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  • Average Low 2020–2025

    37.1 °F

  • Average 2020–2025

    46.3 °F

  • Average High 2020–2025

    55.1 °F
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