S
M
T
W
T
F
S
30
93°
74°
31
90°
73°
1
91°
74°
2
89°
73°
3
90°
73°
4
89°
72°
5
89°
70°
6
90°
71°
7
93°
74°
8
91°
75°
9
94°
74°
10
92°
75°
11
93°
74°
12
94°
73°
13
91°
72°
14
92°
71°
15
90°
71°
16
87°
70°
17
87°
72°
18
Hist. Avg.
90°
70°
19
Hist. Avg.
90°
70°
20
Hist. Avg.
90°
70°
21
Hist. Avg.
89°
69°
22
Hist. Avg.
89°
69°
23
Hist. Avg.
89°
69°
24
Hist. Avg.
89°
68°
25
Hist. Avg.
89°
68°
26
Hist. Avg.
88°
68°
27
Hist. Avg.
88°
67°
28
Hist. Avg.
88°
67°
29
Hist. Avg.
88°
67°
30
Hist. Avg.
88°
66°
1
Hist. Avg.
87°
66°
2
Hist. Avg.
87°
66°
3
Hist. Avg.
87°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Westfield
Westfield's September 2026 forecast shows daily high temperatures ranging from 87° to 94°, with overnight lows between 70° and 75°. The average high for September is 91° with an average low of 73°. 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.
