S
M
T
W
T
F
S
30
93°
61°
31
92°
62°
1
92°
66°
2
93°
65°
3
91°
65°
4
86°
64°
5
90°
65°
6
91°
65°
7
91°
64°
8
90°
65°
9
91°
64°
10
91°
65°
11
90°
65°
12
90°
60°
13
89°
56°
14
82°
56°
15
81°
55°
16
82°
55°
17
84°
60°
18
86°
62°
19
86°
61°
20
79°
62°
21
87°
62°
22
88°
61°
23
87°
54°
24
80°
53°
25
77°
52°
26
80°
51°
27
85°
58°
28
86°
59°
29
Hist. Avg.
81°
53°
30
Hist. Avg.
81°
53°
1
Hist. Avg.
81°
52°
2
Hist. Avg.
80°
52°
3
Hist. Avg.
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in West Hartford
West Hartford's September 2026 forecast shows daily high temperatures ranging from 77° to 93°, with overnight lows between 51° and 66°. The average high for September is 87° 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 September weather will actually feel in West Hartford. See also: October | November | December.