Extreme and Dangerous Heat this Week - Updated Briefing

A heat wave continues across the southeast, with dangerous heat continuing throughout our region this week. It only takes minutes for the cabin of a vehicle to become deadly! Look before you Lock and Stay Cool! Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 31, 11:00 AM EDT until July 31, 07:00 PM EDT

Current conditions at

Jacksonville Naval Air Station (KNIP)

Lat: 30.23°NLon: 81.67°WElev: 10ft.

Fair

82°F

28°C

Humidity	85%
Wind Speed	SW 3 mph
Barometer	30.03 in (1016.6 mb)
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	31 Jul 1:53 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles ENE St Johns FL

Heat Advisory July 31, 11:00am until July 31, 07:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 78 °F
Partly Cloudy
Thursday
High: 99 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 78 °F
Slight Chance
T-storms then
Mostly Clear
Friday
High: 99 °F
Sunny then
Chance
T-storms
Friday Night
Low: 78 °F
Chance
T-storms then
Partly Cloudy
Saturday
High: 96 °F
Chance
T-storms then
T-storms
Saturday Night
Low: 76 °F
T-storms then
Showers
Likely
Sunday
High: 90 °F
Showers
Likely then
T-storms
Sunday Night
Low: 75 °F
T-storms then
Chance
T-storms

Detailed Forecast

Overnight

Partly cloudy, with a low around 78. West wind around 5 mph.

Thursday

A 20 percent chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 99. Heat index values as high as 109. West wind 5 to 8 mph.

Thursday Night

A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. Southwest wind 5 to 8 mph.

Friday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 111. Southwest wind 5 to 9 mph.

Friday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 78. West wind 6 to 9 mph.

Saturday

Showers and thunderstorms, mainly between 2pm and 5pm, then showers and possibly a thunderstorm after 5pm. High near 96. Chance of precipitation is 80%.

Saturday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 76. Chance of precipitation is 80%.

Sunday

A chance of showers before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then showers and thunderstorms after 2pm. High near 90. Chance of precipitation is 90%.

Sunday Night

Showers and thunderstorms before 2am, then a slight chance of showers. Low around 75. Chance of precipitation is 80%.

Monday

A slight chance of showers, then showers and thunderstorms after 8am. High near 92. Chance of precipitation is 90%.

Monday Night

Showers and thunderstorms. Low around 76. Chance of precipitation is 80%.

Tuesday

Showers and thunderstorms. High near 94. Chance of precipitation is 80%.

Tuesday Night

Showers and thunderstorms. Low around 76. Chance of precipitation is 80%.

Wednesday

Showers and thunderstorms likely. Mostly sunny, with a high near 92. Chance of precipitation is 70%.