S
M
T
W
T
F
S
26
47°
43°
27
47°
42°
28
48°
44°
29
48°
47°
30
49°
45°
31
48°
44°
1
47°
45°
2
47°
44°
3
48°
44°
4
48°
43°
5
47°
43°
6
47°
44°
7
48°
45°
8
48°
45°
9
48°
46°
10
50°
45°
11
51°
46°
12
51°
47°
13
50°
45°
14
52°
45°
15
51°
46°
16
50°
46°
17
50°
45°
18
51°
45°
19
50°
44°
20
50°
46°
21
51°
46°
22
51°
45°
23
52°
46°
24
51°
46°
25
52°
45°
26
52°
46°
27
51°
45°
28
51°
44°
29
50°
44°
30
50°
45°
31
51°
45°
1
51°
43°
2
49°
44°
3
50°
44°
4
48°
44°
5
51°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. George
St. George's August 2026 forecast shows daily high temperatures ranging from 47° to 52°, with overnight lows between 42° and 47°. The average high for August is 50° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in St. George. See also: September | October | November.