S
M
T
W
T
F
S
26
79°
57°
27
70°
52°
28
66°
50°
29
82°
61°
30
77°
57°
1
66°
52°
2
68°
45°
3
72°
39°
4
79°
43°
5
81°
46°
6
79°
63°
7
77°
55°
8
72°
48°
9
73°
54°
10
84°
55°
11
81°
55°
12
72°
52°
13
81°
48°
14
79°
54°
15
75°
43°
16
84°
50°
17
88°
61°
18
86°
61°
19
87°
65°
20
90°
65°
21
86°
65°
22
82°
64°
23
80°
66°
24
83°
64°
25
82°
65°
26
81°
64°
27
82°
63°
28
81°
64°
29
82°
62°
30
78°
61°
31
82°
61°
1
81°
60°
2
85°
64°
3
84°
64°
4
80°
63°
5
80°
59°
6
82°
64°
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 78° to 90°, with overnight lows between 59° and 66°. The average high for May is 83° with an average low of 63°. 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.
