Marine Weather Net

Siesta Key, FL Weather Forecast




Siesta Key, Florida

 Lat: 27.28N, Lon: 82.57W

Current Conditions Updated: 253 AM EDT SUN SEP 13 2026

Clear


Temp: 79°F
  • Humidity:
  • 87%
  • Winds:
  • 6 MPH SSE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.01 in.
  • Dewpoint:
  • 75°F
  • Heat index:
  • 83°F

  • Sunrise:
  • 7:13 AM EDT
  • Sunset:
  • 7:36 PM EDT
  • Moonrise:
  • 9:37 AM EDT
  • Moonset:
  • 9:00 PM EDT

TODAY

MOSTLY SUNNY
Hi: 91°F
Lo: 77°F
Precip: 50%

MONDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 77°F
Precip: 50%

TUESDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 75°F
Precip: 70%

THURSDAY

MOSTLY SUNNY
Hi: 90°F
Lo: 75°F
Precip: 60%
Weather Forecast In Detail:
Forecast Issued: 222 AM EDT Sun Sep 13 2026

Today...Mostly sunny with scattered showers and thunderstorms. Highs in the lower 90s. Southwest winds around 5 mph, becoming northwest this afternoon. Chance of rain 50 percent.
Tonight...Mostly cloudy in the evening, then becoming partly cloudy. Isolated thunderstorms in the evening. Isolated showers. Humid with lows in the upper 70s. Northwest winds around 5 mph. Chance of rain 20 percent.
Monday...Mostly sunny. Isolated showers and thunderstorms in the morning, then scattered showers and thunderstorms in the afternoon. Humid with highs in the lower 90s. Northeast winds around 5 mph, becoming northwest around 5 mph in the afternoon. Chance of rain 50 percent. Heat index values up to 105.
Monday Night...Partly cloudy with scattered showers. Scattered thunderstorms, mainly in the evening. Humid with lows in the upper 70s. North winds around 5 mph, becoming east after midnight. Chance of rain 40 percent.
Tuesday...Mostly sunny. Isolated showers in the morning, then numerous showers and scattered thunderstorms in the afternoon. Humid with highs in the lower 90s. East winds 5 to 10 mph. Chance of rain 70 percent. Heat index values up to 106.
Tuesday Night...Partly cloudy with numerous showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the upper 70s. Chance of rain 70 percent.
Wednesday And Wednesday Night...Partly cloudy. Scattered showers and thunderstorms. Highs in the lower 90s. Lows in the mid 70s. Chance of rain 50 percent.
Thursday...Mostly sunny. Numerous showers and scattered thunderstorms in the afternoon. Highs around 90. Chance of rain 60 percent.
Thursday Night...Partly cloudy with isolated showers. Scattered thunderstorms, mainly in the evening. Lows in the mid 70s. Chance of rain 50 percent.
Friday And Friday Night...Partly cloudy. Numerous showers and thunderstorms. Highs in the upper 80s. Lows in the mid 70s. Chance of rain 70 percent.
Saturday...Mostly sunny. Scattered showers and thunderstorms in the morning, then numerous showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 60 percent.
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