S
M
T
W
T
F
S
26
59°
41°
27
69°
38°
28
64°
39°
29
64°
48°
30
61°
48°
1
65°
42°
2
61°
46°
3
61°
44°
4
74°
46°
5
84°
51°
6
70°
55°
7
65°
45°
8
62°
48°
9
60°
50°
10
75°
50°
11
62°
44°
12
64°
42°
13
62°
48°
14
65°
49°
15
69°
53°
16
71°
52°
17
73°
54°
18
74°
56°
19
74°
56°
20
73°
52°
21
68°
47°
22
67°
49°
23
68°
49°
24
69°
50°
25
73°
55°
26
76°
57°
27
72°
54°
28
74°
53°
29
70°
50°
30
74°
57°
31
79°
59°
1
78°
59°
2
76°
57°
3
76°
57°
4
80°
60°
5
80°
60°
6
79°
61°
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 60° to 80°, with overnight lows between 42° and 61°. The average high for May is 71° with an average low of 53°. 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.
