S
M
T
W
T
F
S
30
93°
66°
31
94°
66°
1
94°
68°
2
96°
60°
3
91°
61°
4
91°
62°
5
92°
64°
6
92°
66°
7
96°
67°
8
94°
64°
9
93°
63°
10
92°
61°
11
91°
59°
12
92°
62°
13
93°
60°
14
92°
56°
15
89°
60°
16
90°
58°
17
88°
60°
18
87°
59°
19
85°
58°
20
85°
57°
21
86°
55°
22
86°
58°
23
87°
58°
24
87°
60°
25
90°
60°
26
91°
61°
27
91°
57°
28
89°
52°
29
84°
53°
30
84°
58°
1
89°
59°
2
91°
60°
3
92°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in St. George
St. George's September 2026 forecast shows daily high temperatures ranging from 84° to 96°, with overnight lows between 52° and 68°. The average high for September is 90° with an average low of 60°. 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. George. See also: October | November | December.
