S
M
T
W
T
F
S
28
94°
76°
29
94°
76°
30
93°
73°
1
92°
74°
2
95°
74°
3
95°
75°
4
93°
74°
5
92°
73°
6
92°
72°
7
95°
73°
8
97°
77°
9
98°
76°
10
97°
73°
11
96°
73°
12
96°
72°
13
100°
74°
14
99°
74°
15
93°
71°
16
97°
75°
17
97°
76°
18
96°
77°
19
97°
77°
20
98°
76°
21
98°
77°
22
97°
77°
23
98°
76°
24
99°
77°
25
98°
77°
26
98°
76°
27
97°
77°
28
98°
76°
29
98°
77°
30
99°
78°
31
99°
77°
1
98°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. Jo
St. Jo's July 2026 forecast shows daily high temperatures ranging from 92° to 100°, with overnight lows between 71° and 78°. The average high for July is 97° with an average low of 75°. 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. Jo. See also: August | September | October.