S
M
T
W
T
F
S
30
80°
56°
31
84°
59°
1
85°
55°
2
80°
56°
3
79°
55°
4
81°
59°
5
84°
61°
6
85°
61°
7
84°
60°
8
78°
58°
9
82°
60°
10
84°
59°
11
80°
59°
12
83°
60°
13
83°
57°
14
76°
51°
15
75°
52°
16
76°
52°
17
76°
55°
18
78°
56°
19
80°
57°
20
81°
58°
21
77°
53°
22
78°
55°
23
75°
56°
24
79°
54°
25
77°
48°
26
73°
54°
27
72°
48°
28
Hist. Avg.
72°
46°
29
Hist. Avg.
72°
46°
30
Hist. Avg.
72°
45°
1
Hist. Avg.
71°
45°
2
Hist. Avg.
71°
44°
3
Hist. Avg.
70°
44°
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 72° to 85°, with overnight lows between 48° and 61°. The average high for September is 79° with an average low of 56°. 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.
