S
M
T
W
T
F
S
26
61°
34°
27
62°
32°
28
68°
35°
29
70°
44°
30
72°
37°
1
76°
41°
2
82°
42°
3
82°
44°
4
82°
51°
5
80°
51°
6
79°
48°
7
79°
52°
8
80°
48°
9
77°
49°
10
89°
44°
11
83°
55°
12
93°
49°
13
78°
51°
14
74°
43°
15
72°
46°
16
63°
43°
17
63°
40°
18
70°
40°
19
71°
39°
20
74°
43°
21
75°
49°
22
79°
46°
23
86°
46°
24
89°
56°
25
93°
55°
26
66°
50°
27
71°
50°
28
77°
52°
29
73°
52°
30
78°
52°
31
80°
51°
1
85°
56°
2
87°
57°
3
87°
58°
4
88°
57°
5
87°
56°
6
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Caldwell
Caldwell's May 2026 forecast shows daily high temperatures ranging from 66° to 93°, with overnight lows between 50° and 58°. The average high for May is 81° with an average low of 54°. 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 Caldwell. See also: June | July | August.
