National Weather Service Forecast for: Jacksonville FL
Issued by: National Weather Service Jacksonville, FL
Updated: 6:41 pm EDT Jun 18, 2026
 
Tonight

Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 79. South wind 8 to 13 mph, with gusts as high as 20 mph.
Slight Chance
T-storms then
Partly Cloudy

 Juneteenth

Juneteenth: Showers and thunderstorms likely, mainly between 3pm and 4pm. Mostly cloudy, with a high near 91. Heat index values as high as 100. Breezy, with a southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Breezy.
Slight Chance
T-storms then
T-storms
Likely
 Friday
Night
Friday Night: A 40 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 77. West wind 7 to 10 mph, with gusts as high as 16 mph.
Chance
T-storms then
Chance
Showers
 Saturday

Saturday: Showers and thunderstorms, mainly after 2pm. Some of the storms could produce heavy rainfall. High near 88. West wind around 7 mph. Chance of precipitation is 90%.
Chance
T-storms then
Heavy Rain

 Saturday
Night
Saturday Night: Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 75. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Heavy Rain
then Slight
Chance
Showers
 Sunday

Sunday: A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Slight Chance
T-storms then
T-storms
Likely
 Sunday
Night
Sunday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
T-storms
Likely then
Slight Chance
T-storms
 Monday

Monday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94.
Mostly Sunny
then Slight
Chance
T-storms
 Monday
Night
Monday Night: Partly cloudy, with a low around 78.
Partly Cloudy
Lo 79 °F Hi 91 °F Lo 77 °F Hi 88 °F Lo 75 °F Hi 90 °F Lo 76 °F Hi 94 °F Lo 78 °F

 

Tonight
 
 A 20 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 79. South wind 8 to 13 mph, with gusts as high as 20 mph.
Juneteenth
 
 Showers and thunderstorms likely, mainly between 3pm and 4pm. Mostly cloudy, with a high near 91. Heat index values as high as 100. Breezy, with a southwest wind around 15 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A 40 percent chance of showers and thunderstorms, mainly between 1am and 3am. Mostly cloudy, with a low around 77. West wind 7 to 10 mph, with gusts as high as 16 mph.
Saturday
 
 Showers and thunderstorms, mainly after 2pm. Some of the storms could produce heavy rainfall. High near 88. West wind around 7 mph. Chance of precipitation is 90%.
Saturday Night
 
 Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 75. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
 
 A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Sunday Night
 
 Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.
Monday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94.
Monday Night
 
 Partly cloudy, with a low around 78.
Tuesday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
Tuesday Night
 
 A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 78.
Wednesday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Thursday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

 

Forecast from NOAA-NWS for Jacksonville FL.