St Petersburg weather live forecast

Today's maximum temperature in St Petersburg is expected to be 33°C. Select a day from the live weather forecast for St Petersburg, Florida, USA for more weather parameters.

Wednesday
16th Sep
33

26

6

8
Thursday
17th Sep
31

25

8

9
Friday
18th Sep
32

24

9

9
Saturday
19th Sep
31

24

7

9
Sunday
20th Sep
31

24

7

8

5-day weather forecast updated at 04:01 on Wednesday 16th September 2026 GMT

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The 5-day weather forecast for Florida (St Petersburg) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

St Petersburg weather forecast by day

Below are the detailed weather forecasts for St Petersburg for the next 5 days.

St Petersburg weather for Wednesday 16th September 2026

Expect scattered clouds in St Petersburg, Florida with a maximum temperature of 33°C, high levels of heat & humidity, maximum UV of 8 (Very High) and 6 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 24 kph from the north-east.

33
°C maximum temperature
26
°C minimum temperature
scattered clouds
6
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
24
kph wind from NE

St Petersburg weather for Thursday 17th September 2026

Expect isolated thunderstorms in St Petersburg, Florida with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 8 hours of bright sunshine. There are 0-2 mm of rainfall expected with 25% chance of some rain and a moderate breeze of 23 kph from the north-east.

31
°C maximum temperature
25
°C minimum temperature
isolated thunderstorms
8
hours of sunshine
9
UV index (Very High)
25
% chance of some rain
<2
mm of rainfall expected
M
moderate heat & humidity
23
kph wind from NE

St Petersburg weather for Friday 18th September 2026

Expect scattered clouds in St Petersburg, Florida with a maximum temperature of 32°C, high levels of heat & humidity, maximum UV of 9 (Very High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 17 kph from the north-east.

32
°C maximum temperature
24
°C minimum temperature
scattered clouds
9
hours of sunshine
9
UV index (Very High)
0
mm of rainfall expected
H
high heat & humidity
17
kph wind from NE

St Petersburg weather for Saturday 19th September 2026

Expect isolated thunderstorms in St Petersburg, Florida with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 9 (Very High) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 62% chance of some rain and a gentle breeze of 13 kph from the east.

31
°C maximum temperature
24
°C minimum temperature
isolated thunderstorms
7
hours of sunshine
9
UV index (Very High)
62
% chance of some rain
<5
mm of rainfall expected
M
moderate heat & humidity
13
kph wind from E

St Petersburg weather for Sunday 20th September 2026

Expect isolated thunderstorms in St Petersburg, Florida with a maximum temperature of 31°C, moderate levels of heat & humidity, maximum UV of 8 (Very High) and 7 hours of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a light breeze of 11 kph from the east.