S
M
T
W
T
F
S
28
87°
77°
29
87°
77°
30
88°
76°
1
87°
77°
2
87°
77°
3
88°
76°
4
87°
77°
5
87°
77°
6
88°
76°
7
87°
77°
8
87°
77°
9
88°
76°
10
90°
74°
11
88°
74°
12
88°
75°
13
89°
75°
14
89°
74°
15
90°
74°
16
88°
75°
17
89°
74°
18
89°
74°
19
90°
75°
20
88°
74°
21
89°
75°
22
89°
75°
23
90°
74°
24
89°
75°
25
90°
74°
26
89°
74°
27
89°
75°
28
90°
74°
29
90°
75°
30
88°
73°
31
90°
76°
1
90°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in St. John's
St. John's's July 2026 forecast shows daily high temperatures ranging from 87° to 90°, with overnight lows between 73° and 77°. The average high for July is 89° with an average low of 75°. 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's. See also: August | September | October.
