S
M
T
W
T
F
S
28
89°
73°
29
89°
73°
30
90°
72°
1
93°
73°
2
93°
73°
3
92°
69°
4
93°
72°
5
93°
72°
6
95°
73°
7
93°
73°
8
92°
72°
9
93°
71°
10
93°
72°
11
95°
73°
12
95°
74°
13
96°
73°
14
97°
67°
15
92°
70°
16
91°
74°
17
96°
72°
18
95°
73°
19
95°
73°
20
97°
72°
21
97°
73°
22
96°
73°
23
96°
72°
24
95°
74°
25
95°
72°
26
96°
73°
27
97°
74°
28
96°
73°
29
96°
76°
30
95°
74°
31
98°
74°
1
97°
73°
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 89° to 98°, with overnight lows between 67° and 76°. The average high for July is 94° with an average low of 73°. 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.