St. Petersburg, FL 14-Day Forecast
Florida, United States 🇺🇸
87°
Light rain shower right now
Today: high 89°, low 83°
Updated 1 min ago
St. Petersburg weather for the next 14 days
Wednesday, September 16
Patchy rain nearby High 90° Low 81°Precipitation
57%
· 0.07 in
Max wind
23 mph
Humidity
68%
UV index
8 - Very High
Sunrise / sunset
07:16 AM / 07:34 PM
Thursday, September 17
Sunny High 90° Low 79°Precipitation
7%
· 0.0 in
Max wind
25 mph
Humidity
67%
UV index
10 - Very High
Sunrise / sunset
07:16 AM / 07:33 PM
Friday, September 18
Sunny High 89° Low 79°Precipitation
57%
· 0.06 in
Max wind
19 mph
Humidity
67%
UV index
9 - Very High
Sunrise / sunset
07:17 AM / 07:32 PM
Saturday, September 19
Sunny High 87° Low 80°Precipitation
66%
· 0.3 in
Max wind
13 mph
Humidity
67%
UV index
9 - Very High
Sunrise / sunset
07:17 AM / 07:31 PM
Sunday, September 20
Overcast High 87° Low 80°Precipitation
80%
· 0.41 in
Max wind
13 mph
Humidity
66%
UV index
7 - High
Sunrise / sunset
07:18 AM / 07:29 PM
Monday, September 21
Patchy rain nearby High 87° Low 80°Precipitation
77%
· 0.5 in
Max wind
14 mph
Humidity
68%
UV index
7 - High
Sunrise / sunset
07:18 AM / 07:28 PM
Tuesday, September 22
Sunny High 88° Low 80°Precipitation
17%
· 0.0 in
Max wind
12 mph
Humidity
69%
UV index
8 - Very High
Sunrise / sunset
07:19 AM / 07:27 PM
Wednesday, September 23
Overcast High 88° Low 82°Precipitation
45%
· 0.02 in
Max wind
15 mph
Humidity
69%
UV index
8 - Very High
Sunrise / sunset
07:19 AM / 07:26 PM
Thursday, September 24
Patchy rain nearby High 85° Low 80°Precipitation
46%
· 0.02 in
Max wind
14 mph
Humidity
75%
UV index
6 - High
Sunrise / sunset
07:20 AM / 07:25 PM
Friday, September 25
Light rain shower High 83° Low 77°Precipitation
87%
· 0.72 in
Max wind
12 mph
Humidity
79%
UV index
6 - High
Sunrise / sunset
07:20 AM / 07:24 PM
Saturday, September 26
Light rain shower High 83° Low 74°Precipitation
91%
· 2.61 in
Max wind
26 mph
Humidity
87%
UV index
6 - High
Sunrise / sunset
07:21 AM / 07:22 PM
Sunday, September 27
Moderate or heavy rain shower High 84° Low 77°Precipitation
85%
· 1.28 in
Max wind
23 mph
Humidity
81%
UV index
6 - High
Sunrise / sunset
07:21 AM / 07:21 PM
Monday, September 28
Patchy rain nearby High 85° Low 77°Precipitation
40%
· 0.02 in
Max wind
24 mph
Humidity
76%
UV index
7 - High
Sunrise / sunset
07:22 AM / 07:20 PM
St. Petersburg 14-day outlook: the story
The warmest day of St. Petersburg's 14-day outlook is Wednesday, September 16 with a high near 90°F (32°C); the coolest night comes Saturday, September 26, dipping to 74°F (23°C). The trend points cooler: week two runs about 3°F below week one. Highs over the next two weeks average 88°F (31°C), right in line with the typical September high of 86°F (30°C).
Precipitation is most likely on Tuesday 15, Wednesday 16, Friday 18, Saturday 19 and beyond; the wettest day looks like Saturday, September 26 with about 2.61 in (66.3 mm) expected. For the weekend, expect Saturday 87°F (30°C) and sunny / Sunday 87°F (30°C) and overcast.
For typical conditions month by month, see the St. Petersburg climate & average temperatures guide.
St. Petersburg forecast questions
Will it rain in St. Petersburg this week?
The forecast currently shows meaningful precipitation chances on 9 of the next 14 days, peaking around Saturday, September 26.
What will be the warmest day in St. Petersburg over the next 14 days?
Wednesday, September 16, with a forecast high near 90°F (32°C).
How accurate is a 14-day forecast for St. Petersburg?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in St. Petersburg by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 68° | 55° | 8 | 2.9 in | 8.5 h/day | 75% |
| February | 72° | 59° | 6 | 2.0 in | 9.6 h/day | 78% |
| March | 76° | 63° | 6 | 1.8 in | 10.4 h/day | 73% |
| April | 80° | 67° | 8 | 2.6 in | 11.5 h/day | 71% |
| May | 85° | 72° | 10 | 3.2 in | 12.0 h/day | 70% |
| June | 87° | 76° | 21 | 6.5 in | 11.2 h/day | 78% |
| July | 88° | 78° | 25 | 6.8 in | 10.9 h/day | 78% |
| August | 87° | 78° | 25 | 8.5 in | 10.4 h/day | 79% |
| September | 86° | 76° | 20 | 6.8 in | 10.0 h/day | 79% |
| October | 83° | 71° | 9 | 3.5 in | 9.9 h/day | 74% |
| November | 77° | 65° | 6 | 2.0 in | 9.1 h/day | 74% |
| December | 72° | 60° | 6 | 3.0 in | 8.5 h/day | 78% |
14-day forecasts nearby