S
M
T
W
T
F
S
26
84°
68°
27
84°
68°
28
82°
67°
29
81°
68°
30
79°
67°
31
84°
68°
1
84°
67°
2
83°
68°
3
86°
67°
4
85°
67°
5
84°
65°
6
80°
66°
7
79°
65°
8
80°
61°
9
79°
61°
10
79°
62°
11
78°
67°
12
82°
66°
13
84°
66°
14
83°
60°
15
78°
60°
16
77°
62°
17
80°
66°
18
77°
60°
19
80°
60°
20
79°
59°
21
80°
60°
22
81°
60°
23
81°
59°
24
80°
58°
25
79°
58°
26
80°
63°
27
81°
64°
28
75°
63°
29
81°
65°
30
81°
63°
31
80°
56°
1
77°
55°
2
73°
57°
3
73°
56°
4
74°
56°
5
73°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Haddam
Haddam's August 2026 forecast shows daily high temperatures ranging from 73° to 86°, with overnight lows between 55° and 68°. The average high for August is 80° with an average low of 63°. 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 Haddam. See also: September | October | November.
