S
M
T
W
T
F
S
30
82°
60°
31
82°
64°
1
81°
65°
2
82°
63°
3
81°
55°
4
74°
54°
5
73°
59°
6
75°
64°
7
80°
64°
8
80°
62°
9
76°
56°
10
75°
63°
11
78°
62°
12
78°
63°
13
79°
63°
14
78°
62°
15
79°
61°
16
77°
60°
17
73°
57°
18
77°
54°
19
68°
52°
20
68°
51°
21
65°
50°
22
66°
59°
23
68°
54°
24
68°
50°
25
65°
51°
26
66°
57°
27
72°
58°
28
73°
57°
29
72°
55°
30
71°
55°
1
64°
56°
2
70°
49°
3
63°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Westfield
Westfield's September 2026 forecast shows daily high temperatures ranging from 63° to 82°, with overnight lows between 49° and 65°. The average high for September is 74° 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 September weather will actually feel in Westfield. See also: October | November | December.
