S
M
T
W
T
F
S
28
85°
70°
29
93°
74°
30
95°
73°
1
95°
73°
2
94°
75°
3
90°
71°
4
86°
68°
5
85°
66°
6
86°
67°
7
85°
66°
8
85°
65°
9
84°
63°
10
86°
67°
11
84°
66°
12
81°
67°
13
83°
67°
14
84°
66°
15
86°
68°
16
87°
68°
17
88°
69°
18
85°
69°
19
86°
68°
20
85°
68°
21
85°
69°
22
86°
69°
23
87°
70°
24
87°
68°
25
83°
67°
26
84°
69°
27
87°
70°
28
88°
69°
29
87°
68°
30
87°
68°
31
81°
67°
1
82°
68°
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 81° to 95°, with overnight lows between 63° and 75°. The average high for July is 86° with an average low of 68°. 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.
