S
M
T
W
T
F
S
30
98°
66°
31
97°
65°
1
97°
66°
2
101°
69°
3
102°
64°
4
98°
63°
5
93°
62°
6
95°
65°
7
92°
60°
8
91°
58°
9
91°
59°
10
92°
59°
11
93°
60°
12
94°
62°
13
97°
64°
14
97°
64°
15
95°
58°
16
91°
57°
17
89°
54°
18
87°
54°
19
86°
56°
20
88°
55°
21
91°
64°
22
91°
62°
23
88°
62°
24
86°
59°
25
86°
53°
26
85°
51°
27
84°
52°
28
83°
53°
29
83°
53°
30
91°
57°
1
90°
60°
2
Hist. Avg.
86°
54°
3
Hist. Avg.
85°
53°
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 83° to 102°, with overnight lows between 51° and 69°. The average high for September is 92° 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.
