S
M
T
W
T
F
S
26
84°
70°
27
86°
63°
28
85°
63°
29
85°
65°
30
86°
66°
31
87°
67°
1
88°
70°
2
89°
66°
3
86°
65°
4
83°
63°
5
84°
64°
6
85°
64°
7
86°
65°
8
85°
63°
9
86°
68°
10
91°
68°
11
87°
68°
12
85°
69°
13
86°
68°
14
88°
68°
15
91°
66°
16
90°
63°
17
86°
63°
18
87°
67°
19
90°
62°
20
85°
62°
21
84°
63°
22
84°
65°
23
89°
66°
24
90°
65°
25
88°
64°
26
88°
66°
27
87°
61°
28
84°
62°
29
84°
65°
30
85°
65°
31
86°
64°
1
88°
65°
2
88°
66°
3
87°
66°
4
86°
65°
5
82°
63°
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 82° to 91°, with overnight lows between 61° and 70°. The average high for August is 86° with an average low of 65°. 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.
