S
M
T
W
T
F
S
30
102°
79°
31
102°
73°
1
102°
72°
2
102°
70°
3
100°
75°
4
100°
71°
5
101°
71°
6
98°
69°
7
102°
72°
8
105°
73°
9
91°
75°
10
88°
64°
11
88°
67°
12
87°
67°
13
88°
73°
14
96°
70°
15
76°
60°
16
74°
62°
17
77°
56°
18
79°
58°
19
78°
55°
20
76°
56°
21
74°
55°
22
74°
54°
23
79°
53°
24
82°
61°
25
84°
61°
26
83°
60°
27
83°
60°
28
82°
59°
29
83°
58°
30
81°
56°
1
76°
53°
2
81°
57°
3
82°
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 74° to 96°, with overnight lows between 53° and 73°. The average high for September is 81° 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.
