| National Weather Service Forecast for:
Jacksonville, FL Issued by: National Weather Service Jacksonville, FL |
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| Updated: Mon, 17-Aug-2026 2:21pm EDT | ||||||||||||||||||||||||||||||||||||||||
| Jacksonville | ||||||||||||||||||||||||||||||||||||||||
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Extreme Heat Warning
Heat Advisory
| This Afternoon |
A chance of showers and thunderstorms. Partly sunny. High near 97, with temperatures falling to around 96 in the afternoon. Heat index values as high as 110. West wind around 12 mph, with gusts as high as 17 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Tonight |
A chance of showers and thunderstorms before 9pm. Partly cloudy. Low around 79, with temperatures rising to around 80 overnight. Heat index values as high as 106. Southwest wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible. |
| Tuesday |
Showers and thunderstorms likely after 1pm. Mostly sunny. High near 97, with temperatures falling to around 93 in the afternoon. Heat index values as high as 113. West wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
| Tuesday Night |
A chance of showers and thunderstorms before 10pm. Mostly cloudy. Low around 79, with temperatures rising to around 80 overnight. Heat index values as high as 105. Southwest wind 7 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. |
| Wednesday |
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 97, with temperatures falling to around 94 in the afternoon. Southwest wind around 9 mph. Chance of precipitation is 40%. |
| Wednesday Night |
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Chance of precipitation is 40%. |
| Thursday |
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 20%. |
| Thursday Night |
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 78. Chance of precipitation is 20%. |
| Friday |
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 40%. |
| Friday Night |
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. Chance of precipitation is 40%. |
| Saturday |
A slight chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Mostly sunny, with a high near 92. Chance of precipitation is 60%. |
| Saturday Night |
Showers and thunderstorms likely before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 60%. |
| Sunday |
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%. |
| Sunday Night |
A chance of showers and thunderstorms. Partly cloudy, with a low around 77. |
Forecast from NOAA-NWS for Jacksonville, FL.