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

Northeast Florida Regional Airport (KSGJ)

Lat: 29.96°NLon: 81.34°WElev: 3ft.

Fair

79°F

26°C

Humidity	82%
Wind Speed	W 7 mph
Barometer	30.01 in (1016.2 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

Saint Augustine FL

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

Click here for hazard details and duration

Heat Advisory

Overnight
Low: 77 °F
Mostly Cloudy
Thursday
High: 93 °F
Mostly Sunny
then Chance
T-storms
Thursday Night
Low: 78 °F
Chance
T-storms
Friday
High: 91 °F
Sunny then
Chance
T-storms
Friday Night
Low: 76 °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
Partly Cloudy
Sunday
High: 90 °F
Chance
T-storms
Sunday Night
Low: 76 °F
Partly Cloudy

Detailed Forecast

Overnight

Mostly cloudy, with a low around 77. Southwest wind around 8 mph.

Thursday

A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 93. Heat index values as high as 109. West wind 6 to 11 mph becoming east in the afternoon. Winds could gust as high as 17 mph.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly before 11pm. Mostly cloudy, with a low around 78. South wind 7 to 10 mph, with gusts as high as 16 mph.

Friday

A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 106. Southwest wind 5 to 10 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. Partly cloudy, with a low around 76. South wind 7 to 9 mph becoming southwest after midnight. Chance of precipitation is 20%.

Saturday

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 60%.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 60%.

Sunday

A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.

Sunday Night

Partly cloudy, with a low around 76.

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. Partly cloudy, with a low around 76.