S
M
T
W
T
F
S
26
73°
52°
27
60°
51°
28
58°
53°
29
61°
55°
30
64°
53°
31
56°
53°
1
60°
53°
2
65°
54°
3
67°
55°
4
70°
56°
5
73°
53°
6
56°
52°
7
60°
52°
8
64°
51°
9
65°
54°
10
63°
54°
11
72°
60°
12
76°
57°
13
70°
58°
14
72°
56°
15
66°
54°
16
67°
54°
17
68°
55°
18
68°
46°
19
66°
56°
20
65°
55°
21
67°
52°
22
66°
52°
23
65°
55°
24
65°
55°
25
66°
53°
26
65°
50°
27
62°
49°
28
64°
53°
29
65°
51°
30
66°
55°
31
68°
55°
1
67°
54°
2
67°
53°
3
64°
52°
4
61°
52°
5
61°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. John's
St. John's's August 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 46° and 60°. The average high for August is 66° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in St. John's. See also: September | October | November.
