Extreme Heat Risk this Week

Extreme heat and little overnight relief will lead to an extreme risk for heat-related impacts through the rest of the week. Extreme Heat Warning in effect on Tuesday. Read More >

Hazardous Weather Conditions

Current conditions at

Mayport Naval Station - Adm David L. McDonald Field (KNRB)

Lat: 30.4°NLon: 81.42°WElev: 13ft.

Partly Cloudy

91°F

33°C

Humidity	54%
Wind Speed	Vrbl 5 mph
Barometer	30.04 in (1017.1 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	20 Aug 11:52 am EDT

More Information:

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

Extended Forecast for

Atlantic Beach FL

Heat Advisory August 21, 11:00am until August 21, 07:00pm

Heat Advisory August 20, 12:46pm until August 20, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory August 20, 12:46pm until August 20, 07:00pm
NOW until 7:00pm Thu
Heat Advisory
This Afternoon
High: 94 °F
Chance
T-storms
Tonight
Low: 78 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 92 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 77 °F
Slight Chance
T-storms then
Slight Chance
Showers
Saturday
High: 91 °F
Mostly Sunny
then Showers
Likely
Saturday Night
Low: 76 °F
Showers
Likely then
Chance
Showers
Sunday
High: 90 °F
Chance
T-storms
Sunday Night
Low: 77 °F
Chance
T-storms then
Partly Cloudy

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 94. Heat index values as high as 109. Southwest wind 8 to 13 mph becoming east. Winds could gust as high as 20 mph.

Tonight

A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 78. South wind 8 to 13 mph, with gusts as high as 20 mph.

Friday

A 20 percent chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 108. Southwest wind 6 to 11 mph becoming southeast in the afternoon.

Friday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 77. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.

Saturday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Southwest wind 8 to 10 mph. Chance of precipitation is 70%.

Saturday Night

Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 60%.

Sunday

A slight chance of thunderstorms, then a chance of showers and thunderstorms after 8am. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

Sunday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77.

Monday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90.

Monday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 77.

Tuesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.

Tuesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.

Wednesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.