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 Details for Jacksonville Heat Advisory  +1 additional alert

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Heat Advisory HEAT ADVISORY - Jacksonville

NWS Southeast Regional Radar WU South East Satellite
Radar/Satellite images courtesy of NOAA/NWS and Weather Underground.
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Updated: @ 16-Aug-2026 3:13pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 99.1, Max: 99.1, Min: 80.4 99.1°F
Warmer 1.0°F than last hour.

Heat Danger

Feels like: 123°F

24-hr difference
36°FWarmer 36.0°F than yesterday at this time.
  Today Yesterday
High: 99.1°F
3:04pm 		95.9°F
3:18pm
Low: 80.4°F
6:49am 		75.7°F
5:51am
Wind from SSW SSW
1.8
Gust:
 5.1 mph
1 Bft - Light air
Today: 6.9 mph 11:43am
Gust Month: 30.2 mph August 14
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
This Month: 5.95 in
Season Total: 21.09 in
Tonight

Tonight: Chance Showers And Thunderstorms then Mostly Cloudy
Chance Showers And T-Storms then Mostly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 53 %  
Dew Point: 79°F Increased 1.1°F since last hour.
Barometer: 29.99 inHg Falling 0.07 inHg/hr
Baro Trend: Falling Rapidly
Sunrise: 6:53am
Sunset: 8:06pm
Moonrise: 10:51am
Moonset: 10:23pm
Waxing Crescent
Waxing Crescent, Moon at 4 days in cycle
19%
Illuminated
UV Index Solar Radiation
   8.7     Very High 
High: 10.4 @ 1:16pm
808 W/m2 (78 %)
High: 940 @  1:47pm
 NWS Weather Forecast  - Outlook: This Afternoon & Tonight
This
Afternoon
This Afternoon: Chance Showers And Thunderstorms
Chance Showers And T-Storms

Hi 96 °F		 NWS forecast: A chance of showers and thunderstorms. Partly sunny. High near 96, with temperatures falling to around 94 in the afternoon. Heat index values as high as 110. West wind around 10 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
 
Tonight

Tonight: Chance Showers And Thunderstorms then Mostly Cloudy
Chance Showers And T-Storms then Mostly Cloudy

Lo 79 °F		 NWS forecast: A chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 79. Heat index values as high as 103. Southwest wind 5 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.