St. Petersburg, FL Weather & Growing Conditions
Today
90°F
Mostly Sunny then Scattered Showers And Thunderstorms
Scattered showers and thunderstorms after 2pm. Mostly sunny. High near 90, with temperatures falling to around 86 in the afternoon. Heat index values as high as 97. Northeast wind 3 to 7 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 | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 3 to 7 mph NE | 43% |
| Tonight | 75°F | Scattered Showers And Thunderstorms | 5 mph ENE | 50% |
| Sunday | 89°F | Mostly Sunny then Scattered Showers And Thunderstorms | 6 mph E | 60% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms | 5 mph ENE | 63% |
| Monday | 89°F | Scattered Showers And Thunderstorms | 6 mph SE | 67% |
| Monday Night | 75°F | Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms | 5 mph ENE | 67% |
| Tuesday | 89°F | Scattered Showers And Thunderstorms | 6 mph SSE | 64% |
| Tuesday Night | 76°F | Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms | 3 mph SSE | 64% |
| Wednesday | 90°F | Scattered Showers And Thunderstorms | 6 mph NE | 64% |
| Wednesday Night | 76°F | Chance Showers And Thunderstorms then Scattered Showers And Thunderstorms | 6 mph NE | 64% |
| Thursday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 8 mph NE | 48% |
| Thursday Night | 75°F | Scattered Showers And Thunderstorms | 7 mph NE | 48% |
| Friday | 90°F | Mostly Sunny then Scattered Showers And Thunderstorms | 8 mph NE | 41% |
| Friday Night | 74°F | Scattered Showers And Thunderstorms | 7 mph ENE | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Petersburg, FL
Last spring frost
Jan 17
First fall frost
Jan 15
Growing season
365 days
Hardiness zone
10b
Explore more for St. Petersburg, FL: full frost dates · planting calendar · Florida frost dates
Climate data from the nearest NOAA station, St Petersburg, Fl (4.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.