Grassy Key - South Side Weather Forecast

    • 81
    • 89

    Rain Showers Likely

    • 82
    • 91

    Chance Rain Showers

    • 83
    • 92

    Chance Rain Showers

    • 82
    • 92

    Chance Rain Showers

    • 82
    • 91

    Chance Rain Showers

    • 81
    • 92

    Chance Rain Showers

Today 16 Jul Monroe Middle Keys

Showers likely with a chance of Thunderstorms. Highs in the upper 80s. Southeast Winds 10 to 15 Mph, decreasing to near 10 Mph in the afternoon. Chance of rain 70 percent.

Tonight 16 Jul Monroe Middle Keys

Mostly cloudy with a chance of Showers and a slight chance of Thunderstorms. Lows in the lower 80s. East to southeast Winds near 10 Mph, increasing to 10 to 15 Mph. Chance of rain 40 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grassy Key - South Side Temperature Statistics

July Temperature

The Florida Keys - Marathon International Airport (5.6 miles)

  • Lowest 5 July, 2025

    76.6 °F

  • Average July

    84.9 °F

  • Highest 8 July, 2025

    91.7 °F

Climate (2020–Present)

The Florida Keys - Marathon International Airport (5.6 miles)

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

  • Average Low 2020–2025

    75.3 °F

  • Average 2020–2025

    80 °F

  • Average High 2020–2025

    85.1 °F
Get WillyWeather+ to remove ads