S
M
T
W
T
F
S
26
93°
73°
27
94°
73°
28
94°
74°
29
95°
72°
30
94°
73°
31
94°
72°
1
92°
71°
2
86°
69°
3
86°
71°
4
84°
70°
5
85°
70°
6
86°
69°
7
87°
70°
8
88°
70°
9
88°
69°
10
90°
70°
11
88°
70°
12
87°
69°
13
89°
70°
14
92°
69°
15
92°
69°
16
90°
68°
17
91°
67°
18
90°
68°
19
91°
62°
20
85°
60°
21
83°
59°
22
82°
60°
23
83°
60°
24
84°
61°
25
84°
67°
26
86°
62°
27
90°
66°
28
90°
67°
29
92°
67°
30
91°
66°
31
90°
66°
1
87°
65°
2
84°
59°
3
81°
58°
4
81°
61°
5
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ste. Genevieve
Ste. Genevieve's August 2026 forecast shows daily high temperatures ranging from 81° to 95°, with overnight lows between 58° and 74°. The average high for August is 88° with an average low of 67°. 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 Ste. Genevieve. See also: September | October | November.