S
M
T
W
T
F
S
30
86°
56°
31
78°
56°
1
78°
63°
2
81°
58°
3
83°
64°
4
84°
64°
5
86°
55°
6
82°
55°
7
76°
53°
8
76°
54°
9
77°
60°
10
79°
60°
11
81°
53°
12
74°
53°
13
75°
52°
14
76°
61°
15
77°
51°
16
82°
50°
17
73°
49°
18
72°
49°
19
72°
50°
20
73°
50°
21
71°
49°
22
71°
49°
23
73°
48°
24
76°
53°
25
77°
56°
26
78°
54°
27
79°
47°
28
70°
54°
29
72°
54°
30
77°
48°
1
72°
52°
2
73°
51°
3
67°
46°
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 67° to 86°, with overnight lows between 46° and 64°. The average high for September is 76° with an average low of 54°. 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.
