S
M
T
W
T
F
S
26
72°
31°
27
58°
41°
28
57°
48°
29
68°
43°
30
77°
39°
1
76°
43°
2
75°
49°
3
82°
46°
4
78°
46°
5
66°
51°
6
62°
52°
7
67°
48°
8
66°
46°
9
70°
40°
10
69°
43°
11
73°
50°
12
84°
45°
13
59°
51°
14
61°
46°
15
53°
43°
16
57°
42°
17
65°
44°
18
69°
45°
19
68°
46°
20
72°
47°
21
80°
52°
22
71°
46°
23
71°
49°
24
69°
46°
25
68°
48°
26
68°
47°
27
67°
49°
28
61°
48°
29
62°
45°
30
65°
45°
31
70°
49°
1
70°
52°
2
62°
51°
3
63°
46°
4
62°
46°
5
62°
48°
6
63°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Excelsior
Excelsior's May 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 42° and 52°. The average high for May is 66° with an average low of 47°. 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 Excelsior. See also: June | July | August.