S
M
T
W
T
F
S
26
58°
46°
27
59°
46°
28
71°
42°
29
73°
48°
30
71°
48°
1
77°
53°
2
80°
55°
3
65°
48°
4
61°
46°
5
63°
45°
6
74°
49°
7
81°
53°
8
91°
54°
9
94°
54°
10
95°
56°
11
96°
54°
12
97°
56°
13
92°
54°
14
87°
52°
15
85°
51°
16
81°
49°
17
83°
53°
18
83°
54°
19
84°
54°
20
84°
53°
21
83°
54°
22
84°
54°
23
85°
55°
24
85°
55°
25
84°
54°
26
84°
54°
27
83°
52°
28
77°
51°
29
76°
50°
30
77°
50°
31
78°
52°
1
78°
54°
2
80°
53°
3
80°
53°
4
81°
52°
5
81°
52°
6
80°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Calimesa
Calimesa's May 2026 forecast shows daily high temperatures ranging from 61° to 97°, with overnight lows between 45° and 56°. The average high for May is 82° with an average low of 52°. 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 Calimesa. See also: June | July | August.