S
M
T
W
T
F
S
26
83°
68°
27
84°
67°
28
83°
66°
29
83°
67°
30
82°
66°
31
79°
63°
1
78°
61°
2
79°
64°
3
78°
65°
4
79°
65°
5
82°
67°
6
86°
68°
7
88°
69°
8
87°
67°
9
87°
67°
10
86°
66°
11
87°
67°
12
87°
66°
13
86°
67°
14
80°
62°
15
78°
57°
16
80°
57°
17
79°
56°
18
78°
54°
19
80°
53°
20
76°
53°
21
76°
57°
22
77°
53°
23
78°
56°
24
80°
56°
25
82°
58°
26
85°
62°
27
83°
61°
28
86°
53°
29
78°
52°
30
73°
52°
31
72°
53°
1
72°
50°
2
73°
56°
3
79°
56°
4
80°
58°
5
73°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hartford
Hartford's August 2026 forecast shows daily high temperatures ranging from 72° to 88°, with overnight lows between 50° and 69°. The average high for August is 81° with an average low of 60°. 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 Hartford. See also: September | October | November.