S
M
T
W
T
F
S
26
80°
60°
27
80°
61°
28
81°
59°
29
80°
64°
30
81°
63°
31
80°
57°
1
80°
64°
2
82°
65°
3
83°
59°
4
82°
58°
5
80°
57°
6
81°
57°
7
82°
59°
8
79°
58°
9
79°
63°
10
83°
62°
11
79°
59°
12
82°
63°
13
85°
64°
14
79°
64°
15
81°
63°
16
85°
57°
17
84°
56°
18
78°
57°
19
77°
60°
20
76°
56°
21
78°
55°
22
77°
60°
23
78°
61°
24
82°
62°
25
85°
61°
26
84°
54°
27
81°
53°
28
75°
53°
29
76°
55°
30
76°
57°
31
79°
60°
1
81°
60°
2
82°
58°
3
82°
55°
4
81°
60°
5
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Newfoundland
Newfoundland's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 53° and 65°. The average high for August is 80° with an average low of 59°. 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 Newfoundland. See also: September | October | November.