S
M
T
W
T
F
S
26
55°
42°
27
56°
40°
28
57°
44°
29
56°
41°
30
56°
42°
1
60°
44°
2
57°
41°
3
58°
44°
4
64°
51°
5
68°
50°
6
64°
49°
7
69°
53°
8
71°
54°
9
72°
53°
10
71°
50°
11
60°
48°
12
62°
50°
13
63°
51°
14
62°
52°
15
63°
54°
16
66°
55°
17
63°
55°
18
66°
46°
19
69°
46°
20
64°
47°
21
65°
46°
22
64°
45°
23
65°
47°
24
65°
51°
25
67°
51°
26
68°
54°
27
73°
48°
28
67°
52°
29
68°
56°
30
76°
50°
31
71°
54°
1
68°
56°
2
70°
51°
3
70°
59°
4
74°
55°
5
78°
53°
6
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Westfield
Westfield's May 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 40° and 59°. The average high for May is 66° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Westfield. See also: June | July | August.
