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