National Weather Service Forecast for: Sanibel, FL
Issued by: National Weather Service Tampa Bay Area/Ruskin, FL
Updated: Mon, 31-Aug-2026 12:12am EDT
Coastal Lee
 
  Monday

Monday: Mostly Sunny then Scattered Showers And Thunderstorms
Mostly Sunny then Scattered Showers And T-Storms
Tuesday

Tuesday: Scattered Showers And Thunderstorms
Scattered Showers And T-Storms
Wednesday

Wednesday: Scattered Showers And Thunderstorms
Scattered Showers And T-Storms
Thursday

Thursday: Scattered Showers And Thunderstorms
Scattered Showers And T-Storms
Friday

Friday: Widespread Showers And Thunderstorms
Widespread Showers And T-Storms
Saturday

Saturday: Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms
Isolated Showers And T-Storms then Chance Showers And T-Storms
Sunday

Sunday: Scattered Showers And Thunderstorms then Chance Showers And Thunderstorms
Scattered Showers And T-Storms then Chance Showers And T-Storms
  Hi 91 °F Hi 90 °F Hi 91 °F Hi 89 °F Hi 89 °F Hi 88 °F Hi 88 °F
 
Overnight

Overnight: Partly Cloudy
Partly Cloudy
Monday
Night
Monday Night: Chance Showers And Thunderstorms then Mostly Cloudy
Chance Showers And T-Storms then Mostly Cloudy
Tuesday
Night
Tuesday Night: Widespread Showers And Thunderstorms then Scattered Showers And Thunderstorms
Widespread Showers And T-Storms then Scattered Showers And T-Storms
Wednesday
Night
Wednesday Night: Widespread Showers And Thunderstorms then Scattered Showers And Thunderstorms
Widespread Showers And T-Storms then Scattered Showers And T-Storms
Thursday
Night
Thursday Night: Widespread Showers And Thunderstorms then Scattered Showers And Thunderstorms
Widespread Showers And T-Storms then Scattered Showers And T-Storms
Friday
Night
Friday Night: Widespread Showers And Thunderstorms then Scattered Showers And Thunderstorms
Widespread Showers And T-Storms then Scattered Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms
Chance Showers And T-Storms then Scattered Showers And T-Storms
 
Lo 79 °F Lo 79 °F Lo 80 °F Lo 81 °F Lo 81 °F Lo 81 °F Lo 82 °F  

 

Overnight
 
Partly cloudy, with a low around 79. East wind around 10 mph. New rainfall amounts less than a tenth of an inch possible.
Monday
 
Scattered showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. Heat index values as high as 102. East wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night
 
A chance of showers and thunderstorms before 8pm, then scattered showers and thunderstorms between 8pm and midnight. Mostly cloudy, with a low around 79. Heat index values as high as 98. East northeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
 
Scattered showers and thunderstorms between 11am and 2pm, then widespread showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 103. South southeast wind around 8 mph. Chance of precipitation is 80%.
Tuesday Night
 
Widespread showers and thunderstorms before 8pm, then scattered showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 80. Northeast wind 7 to 10 mph. Chance of precipitation is 80%.
Wednesday
 
Scattered showers and thunderstorms between 11am and 2pm, then widespread showers and thunderstorms. Mostly sunny, with a high near 91. South southeast wind 6 to 9 mph. Chance of precipitation is 80%.
Wednesday Night
 
Widespread showers and thunderstorms before 8pm, then scattered showers and thunderstorms. Mostly cloudy, with a low around 81. East northeast wind 8 to 13 mph. Chance of precipitation is 80%.
Thursday
 
Scattered showers and thunderstorms before 2pm, then widespread showers and thunderstorms. Partly sunny, with a high near 89. East wind 7 to 12 mph. Chance of precipitation is 80%.
Thursday Night
 
Widespread showers and thunderstorms before 8pm, then scattered showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 81. East wind around 13 mph. Chance of precipitation is 80%.
Friday
 
Widespread showers and thunderstorms after 8am. Partly sunny, with a high near 89. Chance of precipitation is 80%.
Friday Night
 
Widespread showers and thunderstorms before 8pm, then scattered showers and thunderstorms. Mostly cloudy, with a low around 81. Chance of precipitation is 80%.
Saturday
 
Isolated showers and thunderstorms before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Saturday Night
 
A chance of showers and thunderstorms before 8pm, then scattered showers and thunderstorms. Mostly cloudy, with a low around 82. Chance of precipitation is 70%.
Sunday
 
Scattered showers and thunderstorms before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Sanibel, FL.
Animated forecast icons courtesy of www.meteotreviglio.com.