S
M
T
W
T
F
S
26
75°
55°
27
76°
54°
28
78°
56°
29
79°
56°
30
78°
57°
31
79°
57°
1
78°
56°
2
76°
52°
3
72°
49°
4
72°
49°
5
73°
54°
6
75°
55°
7
77°
55°
8
76°
54°
9
79°
56°
10
78°
56°
11
79°
55°
12
79°
55°
13
77°
56°
14
79°
54°
15
81°
54°
16
79°
55°
17
77°
56°
18
80°
56°
19
78°
55°
20
76°
49°
21
77°
46°
22
71°
46°
23
73°
48°
24
76°
49°
25
74°
44°
26
71°
46°
27
71°
46°
28
69°
45°
29
69°
43°
30
70°
43°
31
69°
42°
1
68°
42°
2
69°
45°
3
69°
46°
4
68°
47°
5
67°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Colebrook
Colebrook's August 2026 forecast shows daily high temperatures ranging from 67° to 81°, with overnight lows between 42° and 57°. The average high for August is 75° 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 August weather will actually feel in Colebrook. See also: September | October | November.