Siesta Key Weather Forecast

    • 76
    • 93

    Thunderstorms

    • 77
    • 93

    Thunderstorms

    • 80
    • 92

    Thunderstorms

    • 79
    • 92

    Thunderstorms

    • 77
    • 91

    Thunderstorms

    • 77
    • 90

    Thunderstorms

Today 18 Aug Inland Sarasota

Mostly sunny with scattered Showers and Thunderstorms. Near steady temperature in the lower 90s. Northwest Winds around 5 Mph. Chance of rain 50 percent. Heat index Values up to 106.

Tonight 18 Aug Inland Sarasota

Mostly cloudy with scattered Showers and Thunderstorms this Evening, then mostly clear after midnight. Lows in the mid 70s. Northeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Siesta Key Temperature Statistics

August Temperature

Sarasota / Bradenton, Sarasota-Bradenton International Airport (8.1 miles)

  • Lowest 13 August, 2025

    74.6 °F
  • Average August

    84.2 °F
  • Highest 6 August, 2025

    94.6 °F

Climate (2020–Present)

Sarasota / Bradenton, Sarasota-Bradenton International Airport (8.1 miles)

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  • Average Low 2020–2025

    67.4 °F
  • Average 2020–2025

    75.1 °F
  • Average High 2020–2025

    83.4 °F
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