S
M
T
W
T
F
S
26
83°
49°
27
85°
48°
28
83°
54°
29
74°
63°
30
74°
59°
31
82°
57°
1
86°
55°
2
85°
62°
3
83°
59°
4
83°
52°
5
87°
50°
6
91°
55°
7
90°
64°
8
83°
62°
9
84°
58°
10
83°
56°
11
79°
55°
12
80°
51°
13
78°
51°
14
74°
45°
15
74°
42°
16
75°
42°
17
75°
63°
18
82°
61°
19
81°
56°
20
78°
51°
21
78°
49°
22
77°
46°
23
75°
60°
24
74°
53°
25
68°
56°
26
75°
51°
27
79°
59°
28
74°
53°
29
72°
50°
30
69°
49°
31
70°
51°
1
71°
53°
2
72°
51°
3
70°
50°
4
69°
48°
5
69°
46°
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 68° to 79°, with overnight lows between 46° and 60°. The average high for August is 72° with an average low of 52°. 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.