S
M
T
W
T
F
S
30
89°
69°
31
89°
66°
1
88°
66°
2
83°
63°
3
84°
63°
4
85°
65°
5
87°
65°
6
87°
63°
7
82°
62°
8
83°
64°
9
83°
62°
10
82°
62°
11
82°
63°
12
83°
63°
13
84°
61°
14
81°
60°
15
82°
61°
16
81°
60°
17
83°
63°
18
83°
60°
19
81°
63°
20
82°
63°
21
Hist. Avg.
82°
62°
22
Hist. Avg.
82°
62°
23
Hist. Avg.
82°
61°
24
Hist. Avg.
82°
61°
25
Hist. Avg.
81°
60°
26
Hist. Avg.
81°
60°
27
Hist. Avg.
81°
60°
28
Hist. Avg.
80°
59°
29
Hist. Avg.
80°
59°
30
Hist. Avg.
80°
58°
1
Hist. Avg.
79°
58°
2
Hist. Avg.
79°
57°
3
Hist. Avg.
79°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. Pauls
St. Pauls's September 2026 forecast shows daily high temperatures ranging from 81° to 89°, with overnight lows between 60° and 69°. The average high for September is 84° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in St. Pauls. See also: October | November | December.