S
M
T
W
T
F
S
26
85°
72°
27
84°
70°
28
76°
64°
29
77°
57°
30
81°
58°
31
83°
59°
1
75°
69°
2
78°
62°
3
79°
57°
4
85°
60°
5
85°
70°
6
81°
68°
7
84°
68°
8
78°
61°
9
81°
57°
10
82°
70°
11
80°
68°
12
79°
65°
13
79°
66°
14
86°
68°
15
77°
70°
16
79°
63°
17
79°
59°
18
82°
64°
19
77°
53°
20
77°
53°
21
74°
57°
22
76°
53°
23
79°
57°
24
82°
58°
25
82°
60°
26
80°
58°
27
79°
54°
28
78°
57°
29
74°
57°
30
76°
59°
31
73°
54°
1
74°
60°
2
72°
59°
3
72°
55°
4
71°
55°
5
72°
54°
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 71° to 82°, with overnight lows between 53° and 70°. The average high for August is 77° 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.