S
M
T
W
T
F
S
28
82°
71°
29
90°
72°
30
88°
71°
1
90°
71°
2
89°
70°
3
87°
73°
4
85°
74°
5
86°
74°
6
89°
75°
7
92°
75°
8
92°
74°
9
91°
75°
10
92°
75°
11
90°
74°
12
91°
75°
13
87°
74°
14
86°
73°
15
86°
74°
16
89°
72°
17
86°
68°
18
83°
69°
19
83°
67°
20
85°
68°
21
84°
67°
22
85°
68°
23
85°
68°
24
86°
69°
25
86°
71°
26
90°
75°
27
86°
67°
28
86°
68°
29
87°
74°
30
89°
70°
31
89°
74°
1
93°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. John
St. John's July 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 67° and 75°. The average high for July is 88° with an average low of 72°. 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. John. See also: August | September | October.
