S
M
T
W
T
F
S
26
84°
65°
27
84°
65°
28
85°
64°
29
85°
64°
30
82°
58°
31
77°
57°
1
77°
62°
2
76°
61°
3
79°
62°
4
83°
64°
5
82°
65°
6
83°
64°
7
80°
60°
8
76°
61°
9
77°
61°
10
79°
59°
11
81°
62°
12
82°
63°
13
84°
64°
14
85°
62°
15
83°
65°
16
86°
60°
17
84°
55°
18
76°
54°
19
74°
53°
20
75°
53°
21
76°
54°
22
76°
54°
23
77°
55°
24
76°
54°
25
79°
56°
26
81°
60°
27
81°
53°
28
75°
52°
29
75°
53°
30
76°
58°
31
77°
52°
1
78°
50°
2
73°
51°
3
74°
54°
4
77°
60°
5
81°
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 73° to 86°, with overnight lows between 50° and 65°. The average high for August is 79° with an average low of 58°. 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.