S
M
T
W
T
F
S
30
72°
66°
31
79°
66°
1
82°
74°
2
88°
69°
3
81°
69°
4
76°
68°
5
75°
57°
6
75°
53°
7
75°
47°
8
77°
49°
9
81°
68°
10
74°
58°
11
71°
56°
12
79°
67°
13
80°
62°
14
79°
72°
15
77°
65°
16
71°
62°
17
75°
61°
18
65°
57°
19
63°
55°
20
66°
57°
21
65°
56°
22
67°
55°
23
69°
60°
24
71°
61°
25
64°
57°
26
71°
60°
27
73°
60°
28
72°
59°
29
67°
57°
30
70°
59°
1
70°
58°
2
65°
58°
3
67°
57°
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 81°, with overnight lows between 55° and 72°. The average high for September is 71° 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 Westfield. See also: October | November | December.
