Key West International Airport Weather Forecast

    • 79
    • 89

    Chance Thunderstorms

    • 79
    • 90

    Rain Showers Likely

    • 80
    • 90

    Chance Thunderstorms

    • 80
    • 91

    Chance Thunderstorms

    • 79
    • 90

    Chance Thunderstorms

    • 78
    • 90

    Chance Thunderstorms

Today 7 Sep Monroe Lower Keys

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

Tonight 7 Sep Monroe Lower Keys

Mostly cloudy with a chance of Showers and Thunderstorms. Lows near 80. Southwest Winds near 5 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Key West International Airport Temperature Statistics

September Temperature

Key West International Airport (0 miles)

  • Lowest 4 September, 2025

    75 °F

  • Average September

    82.5 °F

  • Highest 2 September, 2025

    88 °F

Climate (2020–Present)

Key West International Airport (0 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    75.6 °F

  • Average 2020–2025

    79.6 °F

  • Average High 2020–2025

    83.9 °F
Get WillyWeather+ to remove ads