Sand Key Lighthouse Weather Forecast

    • 81
    • 87

    Rain Showers Likely

    • 81
    • 87

    Rain Showers Likely

    • 82
    • 87

    Rain Showers

    • 82
    • 88

    Rain Showers Likely

    • 82
    • 88

    Rain Showers Likely

    • 82
    • 88

    Chance Thunderstorms

Today 19 Sep Monroe Lower Keys

Partly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 80s. East Winds near 5 Mph. Chance of rain 50 percent.

Tonight 19 Sep Monroe Lower Keys

Mostly cloudy with a chance of Showers and Thunderstorms. Lows in the upper 70s. Southeast Winds near 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sand Key Lighthouse Temperature Statistics

September Temperature

Key West International Airport (10.6 miles)

  • Lowest 5 September, 2026

    78.7 °F

  • Average September

    85.9 °F

  • Highest 12 September, 2026

    94.6 °F

Climate (2021–2026)

Key West International Airport (10.6 miles)

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  • Average Low 2021–2026

    75.7 °F

  • Average 2021–2026

    79.8 °F

  • Average High 2021–2026

    84.2 °F
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