St. Augustine, FL Weather & Growing Conditions
Today
91°F
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Partly sunny. High near 91, with temperatures falling to around 85 in the afternoon. Heat index values as high as 103. Southwest wind around 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Partly Sunny then Chance Showers And Thunderstorms | 9 mph SW | 43% |
| Tonight | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 to 9 mph S | 49% |
| Wednesday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 12 mph S | 40% |
| Wednesday Night | 75°F | Chance Showers And Thunderstorms then Mostly Cloudy | 1 to 10 mph SE | 34% |
| Thursday | 90°F | Chance Showers And Thunderstorms | 1 to 12 mph SE | 34% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms then Partly Cloudy | 6 to 10 mph E | 30% |
| Friday | 90°F | Showers And Thunderstorms Likely | 6 to 15 mph E | 58% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 5 to 14 mph E | 37% |
| Saturday | 90°F | Showers And Thunderstorms Likely | 5 to 12 mph E | 56% |
| Saturday Night | 75°F | Showers And Thunderstorms Likely then Partly Cloudy | 3 to 10 mph SE | 56% |
| Sunday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 10 mph SE | 35% |
| Sunday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 9 mph SE | 35% |
| Monday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 9 mph SE | 24% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph S | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Augustine, FL
Last spring frost
Feb 1
First fall frost
Jan 5
Growing season
334 days
Hardiness zone
9b
Explore more for St. Augustine, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, St Augustine Lighthouse, Fl (5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.