S
M
T
W
T
F
S
26
78°
53°
27
78°
47°
28
70°
47°
29
77°
54°
30
78°
51°
1
71°
49°
2
72°
48°
3
73°
54°
4
71°
52°
5
74°
51°
6
76°
52°
7
80°
56°
8
80°
54°
9
79°
53°
10
81°
56°
11
82°
58°
12
82°
59°
13
81°
59°
14
81°
57°
15
76°
52°
16
74°
58°
17
74°
55°
18
77°
59°
19
76°
52°
20
77°
53°
21
79°
53°
22
80°
56°
23
83°
59°
24
84°
54°
25
77°
54°
26
78°
55°
27
78°
55°
28
84°
60°
29
78°
61°
30
85°
56°
31
81°
55°
1
80°
62°
2
84°
57°
3
83°
57°
4
84°
58°
5
82°
58°
6
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Westminster
Westminster's May 2026 forecast shows daily high temperatures ranging from 70° to 87°, with overnight lows between 47° and 62°. The average high for May is 79° with an average low of 55°. 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 Westminster. See also: June | July | August.
