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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: @ 19-Aug-2026 6:10am  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 78.1, Max: 80.6, Min: 77.9 78.1°F
Colder 0.5°F than last hour.

Comfortable

Feels like: 78°F

24-hr difference
28°FWarmer 28.0°F than yesterday at this time.
  Today Yesterday
High: 80.6°F
2:08am 		100.6°F
2:11pm
Low: 77.9°F
5:22am 		79.9°F
10:28pm
Wind from SW SW
1.6
Gust:
 4.3 mph
1 Bft - Light air
Today: 8.5 mph 12:55am
Gust Month: 30.2 mph August 14
Rain Today: 0.01 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
This Month: 6.09 in
Season Total: 21.23 in
Tonight

Tonight: Chance Showers And Thunderstorms then Partly Cloudy
Chance Showers And T-Storms then Partly Cloudy
Humidity & Barometer Almanac Moon
Humidity: 86 %  
Dew Point: 73.6°F Decreased 0.5°F since last hour.
Barometer: 29.47 inHg Rising 0.03 inHg/hr
Baro Trend: Rising Slowly
Sunrise: 6:55am
Sunset: 8:03pm
Moonset: 12:00am
Moonrise: 1:48pm
Waxing Crescent
Waxing Crescent, Moon at 7 days in cycle
43%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 0.0 @ 12:00am
0 W/m2 (0 %)
High: 0 @  12:00am
 NWS Weather Forecast  - Outlook: Today & Tonight
Today

Today: Mostly Sunny then Showers And Thunderstorms Likely
Mostly Sunny then Showers And T-Storms Likely

Hi 97 °F		 NWS forecast: Showers and thunderstorms likely after 3pm. Mostly sunny. High near 97, with temperatures falling to around 94 in the afternoon. Heat index values as high as 110. West wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
 
Tonight

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

Lo 77 °F		 NWS forecast: A chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 77. Heat index values as high as 102. Southwest wind 3 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.