S
M
T
W
T
F
S
30
82°
53°
31
77°
58°
1
68°
62°
2
73°
61°
3
82°
61°
4
84°
62°
5
79°
56°
6
71°
51°
7
80°
54°
8
83°
60°
9
79°
68°
10
82°
59°
11
75°
50°
12
77°
55°
13
82°
57°
14
78°
56°
15
78°
57°
16
76°
50°
17
72°
53°
18
73°
54°
19
72°
50°
20
77°
51°
21
75°
53°
22
67°
53°
23
68°
52°
24
70°
52°
25
71°
51°
26
72°
49°
27
68°
45°
28
68°
49°
29
73°
51°
30
74°
52°
1
73°
51°
2
72°
51°
3
70°
49°
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 83°, with overnight lows between 45° and 68°. The average high for September is 74° with an average low of 53°. 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.
