S
M
T
W
T
F
S
26
82°
63°
27
82°
65°
28
86°
69°
29
87°
70°
30
88°
69°
31
89°
63°
1
87°
68°
2
87°
69°
3
81°
68°
4
86°
66°
5
87°
69°
6
88°
69°
7
89°
65°
8
87°
62°
9
82°
62°
10
81°
66°
11
82°
64°
12
80°
62°
13
80°
62°
14
81°
61°
15
80°
62°
16
81°
63°
17
80°
62°
18
81°
66°
19
86°
65°
20
85°
64°
21
80°
68°
22
Hist. Avg.
82°
64°
23
Hist. Avg.
82°
63°
24
Hist. Avg.
82°
63°
25
Hist. Avg.
82°
63°
26
Hist. Avg.
82°
63°
27
Hist. Avg.
82°
63°
28
Hist. Avg.
81°
62°
29
Hist. Avg.
81°
62°
30
Hist. Avg.
81°
62°
31
Hist. Avg.
81°
62°
1
Hist. Avg.
80°
61°
2
Hist. Avg.
80°
61°
3
Hist. Avg.
80°
61°
4
Hist. Avg.
80°
60°
5
Hist. Avg.
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Hartford
Hartford's August 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 61° and 70°. The average high for August is 84° 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.