S
M
T
W
T
F
S
30
50°
45°
31
51°
45°
1
51°
43°
2
49°
44°
3
50°
44°
4
48°
44°
5
51°
44°
6
50°
45°
7
50°
44°
8
49°
45°
9
51°
44°
10
51°
44°
11
50°
43°
12
50°
39°
13
49°
44°
14
50°
43°
15
49°
41°
16
49°
41°
17
48°
40°
18
46°
41°
19
46°
40°
20
45°
41°
21
47°
40°
22
46°
39°
23
46°
38°
24
45°
40°
25
45°
41°
26
44°
40°
27
43°
38°
28
Hist. Avg.
47°
39°
29
Hist. Avg.
47°
39°
30
Hist. Avg.
47°
38°
1
Hist. Avg.
46°
38°
2
Hist. Avg.
46°
38°
3
Hist. Avg.
46°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in St. George
St. George's September 2026 forecast shows daily high temperatures ranging from 43° to 51°, with overnight lows between 38° and 45°. The average high for September is 48° with an average low of 42°. 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.
