S
M
T
W
T
F
S
28
83°
64°
29
91°
75°
30
94°
74°
1
95°
74°
2
94°
75°
3
89°
72°
4
84°
67°
5
82°
65°
6
83°
67°
7
83°
66°
8
84°
65°
9
83°
65°
10
85°
67°
11
83°
65°
12
85°
66°
13
84°
64°
14
79°
60°
15
79°
61°
16
80°
64°
17
82°
66°
18
86°
67°
19
82°
64°
20
81°
66°
21
84°
68°
22
86°
68°
23
87°
69°
24
88°
69°
25
88°
68°
26
87°
69°
27
87°
69°
28
86°
68°
29
87°
68°
30
86°
63°
31
80°
61°
1
79°
65°
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 79° to 95°, with overnight lows between 60° and 75°. The average high for July is 85° with an average low of 67°. 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.
