S
M
T
W
T
F
S
28
59°
46°
29
62°
44°
30
61°
47°
1
62°
48°
2
65°
50°
3
64°
51°
4
67°
50°
5
68°
50°
6
68°
51°
7
67°
48°
8
66°
48°
9
67°
49°
10
65°
47°
11
65°
48°
12
66°
50°
13
67°
51°
14
66°
50°
15
66°
49°
16
67°
53°
17
67°
53°
18
70°
52°
19
72°
54°
20
70°
54°
21
71°
52°
22
68°
53°
23
67°
52°
24
71°
54°
25
71°
53°
26
70°
56°
27
69°
54°
28
71°
49°
29
69°
50°
30
67°
51°
31
68°
51°
1
70°
52°
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 59° to 72°, with overnight lows between 44° and 56°. The average high for July is 67° with an average low of 51°. 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.