S
M
T
W
T
F
S
28
89°
80°
29
90°
80°
30
89°
80°
1
90°
79°
2
89°
78°
3
89°
78°
4
91°
80°
5
90°
79°
6
92°
79°
7
91°
80°
8
88°
80°
9
88°
80°
10
87°
81°
11
87°
81°
12
88°
80°
13
87°
81°
14
87°
81°
15
88°
80°
16
87°
81°
17
87°
81°
18
88°
80°
19
87°
80°
20
87°
81°
21
88°
80°
22
88°
80°
23
87°
81°
24
87°
81°
25
88°
80°
26
87°
81°
27
87°
81°
28
88°
80°
29
87°
81°
30
87°
81°
31
88°
80°
1
87°
81°
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 87° to 92°, with overnight lows between 78° and 81°. The average high for July is 88° with an average low of 80°. 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.
