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

Heat Advisory in effect from August 20, 11:00 AM EDT until August 20, 07:00 PM EDT

Current conditions at

Jacksonville International Airport (KJAX)

Lat: 30.5°NLon: 81.69°WElev: 23ft.

Partly Cloudy

79°F

26°C

Humidity	82%
Wind Speed	S 5 mph
Barometer	29.98 in (1015.2 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	19 Aug 11:56 pm EDT

More Information:

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

Extended Forecast for

4 Miles S Nassau Village-Ratliff FL

Heat Advisory August 20, 11:00am until August 20, 07:00pm

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 75 °F
Slight Chance
T-storms
Thursday
High: 99 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 75 °F
Chance
T-storms
Friday
High: 95 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 74 °F
Chance
T-storms then
Chance
Showers
Saturday
High: 93 °F
Slight Chance
T-storms then
T-storms
Likely
Saturday Night
Low: 73 °F
T-storms
Likely then
Chance
Showers
Sunday
High: 93 °F
Chance
T-storms
Sunday Night
Low: 73 °F
Chance
T-storms then
Mostly Clear

Detailed Forecast

Overnight

A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.

Thursday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny and hot, with a high near 99. Heat index values as high as 110. Calm wind becoming southwest around 6 mph in the afternoon.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 10pm. Mostly cloudy, with a low around 75. South wind around 6 mph becoming calm in the evening.

Friday

A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. Heat index values as high as 107. Calm wind becoming south around 6 mph in the afternoon.

Friday Night

A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 74. Light southwest wind. Chance of precipitation is 30%.

Saturday

A slight chance of showers, then showers and thunderstorms likely after 11am. Partly sunny, with a high near 93. 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 73. 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 93. Chance of precipitation is 30%.

Sunday Night

A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73.

Monday

A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.

Monday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Tuesday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.

Tuesday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Wednesday

A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.