S
M
T
W
T
F
S
26
59°
41°
27
69°
38°
28
64°
39°
29
64°
48°
30
62°
45°
1
61°
43°
2
60°
40°
3
60°
41°
4
68°
50°
5
68°
51°
6
70°
57°
7
71°
52°
8
64°
48°
9
65°
49°
10
67°
47°
11
68°
49°
12
66°
56°
13
64°
49°
14
66°
46°
15
66°
52°
16
67°
52°
17
67°
49°
18
68°
56°
19
75°
56°
20
73°
55°
21
69°
57°
22
76°
52°
23
68°
53°
24
71°
54°
25
69°
50°
26
69°
54°
27
68°
55°
28
70°
59°
29
77°
59°
30
76°
58°
31
76°
56°
1
72°
52°
2
68°
52°
3
69°
53°
4
71°
52°
5
70°
53°
6
71°
53°
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 77°, with overnight lows between 40° and 59°. The average high for May is 68° 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 Caldwell. See also: June | July | August.
