S
M
T
W
T
F
S
26
67°
59°
27
67°
61°
28
68°
59°
29
67°
61°
30
70°
56°
31
66°
55°
1
65°
55°
2
66°
56°
3
66°
61°
4
67°
61°
5
68°
59°
6
67°
57°
7
72°
61°
8
72°
62°
9
72°
61°
10
73°
55°
11
68°
57°
12
69°
60°
13
67°
56°
14
68°
55°
15
68°
55°
16
69°
57°
17
66°
58°
18
66°
55°
19
66°
56°
20
67°
58°
21
70°
60°
22
72°
61°
23
71°
61°
24
72°
60°
25
72°
53°
26
69°
52°
27
64°
52°
28
64°
53°
29
65°
55°
30
64°
57°
31
63°
59°
1
65°
58°
2
69°
55°
3
66°
53°
4
67°
53°
5
65°
57°
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 63° to 73°, with overnight lows between 52° and 62°. The average high for August is 68° with an average low of 57°. 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.