S
M
T
W
T
F
S
28
68°
57°
29
68°
55°
30
70°
57°
1
68°
59°
2
68°
59°
3
72°
57°
4
66°
59°
5
66°
59°
6
86°
59°
7
81°
63°
8
81°
61°
9
82°
61°
10
82°
63°
11
77°
64°
12
75°
63°
13
73°
61°
14
77°
63°
15
78°
63°
16
77°
64°
17
75°
62°
18
74°
61°
19
73°
60°
20
72°
61°
21
73°
62°
22
74°
62°
23
74°
61°
24
72°
61°
25
71°
62°
26
65°
62°
27
62°
61°
28
63°
61°
29
63°
62°
30
65°
63°
31
66°
62°
1
67°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint Johns
Saint Johns's July 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 60° and 64°. The average high for July is 71° with an average low of 62°. 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 Saint Johns. See also: August | September | October.