S
M
T
W
T
F
S
27
81°
79°
28
86°
75°
29
85°
77°
30
88°
74°
1
87°
77°
2
87°
77°
3
87°
78°
4
89°
77°
5
85°
76°
6
84°
75°
7
82°
74°
8
84°
73°
9
82°
75°
10
84°
76°
11
83°
77°
12
84°
75°
13
84°
73°
14
83°
77°
15
82°
72°
16
82°
74°
17
81°
72°
18
81°
72°
19
82°
70°
20
80°
69°
21
80°
65°
22
77°
65°
23
78°
67°
24
79°
69°
25
79°
70°
26
80°
68°
27
79°
68°
28
78°
69°
29
77°
70°
30
78°
65°
31
76°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in St. Petersburg
St. Petersburg's October 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 63° and 78°. The average high for October is 82° with an average low of 72°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in St. Petersburg. See also: November | December | January.
