S
M
T
W
T
F
S
28
94°
73°
29
93°
77°
30
95°
77°
1
93°
76°
2
96°
74°
3
94°
74°
4
94°
69°
5
85°
69°
6
86°
68°
7
87°
70°
8
90°
69°
9
83°
71°
10
87°
71°
11
83°
71°
12
87°
68°
13
90°
65°
14
92°
70°
15
93°
73°
16
93°
75°
17
92°
75°
18
94°
73°
19
92°
68°
20
91°
68°
21
88°
67°
22
89°
66°
23
90°
68°
24
89°
68°
25
90°
70°
26
88°
67°
27
87°
72°
28
90°
71°
29
85°
68°
30
84°
70°
31
84°
68°
1
87°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Peters
St. Peters's July 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 65° and 75°. The average high for July is 89° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in St. Peters. See also: August | September | October.
