S
M
T
W
T
F
S
26
78°
55°
27
78°
55°
28
74°
56°
29
75°
53°
30
77°
56°
31
78°
52°
1
79°
55°
2
80°
56°
3
78°
51°
4
79°
49°
5
73°
51°
6
74°
55°
7
78°
55°
8
80°
50°
9
75°
48°
10
77°
54°
11
80°
47°
12
77°
47°
13
72°
55°
14
79°
56°
15
78°
48°
16
78°
47°
17
71°
46°
18
71°
45°
19
72°
46°
20
76°
48°
21
70°
45°
22
69°
51°
23
75°
52°
24
76°
47°
25
75°
43°
26
69°
42°
27
67°
43°
28
68°
44°
29
67°
44°
30
69°
50°
31
71°
52°
1
76°
51°
2
75°
49°
3
74°
43°
4
73°
49°
5
73°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Plaster Rock
Plaster Rock's August 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 40° and 56°. The average high for August is 75° with an average low of 50°. 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 Plaster Rock. See also: September | October | November.