S
M
T
W
T
F
S
26
87°
72°
27
89°
75°
28
90°
75°
29
81°
63°
30
68°
63°
1
63°
52°
2
75°
50°
3
79°
50°
4
81°
57°
5
84°
70°
6
79°
61°
7
68°
57°
8
79°
61°
9
88°
70°
10
88°
64°
11
75°
64°
12
82°
63°
13
86°
61°
14
88°
63°
15
88°
68°
16
86°
70°
17
86°
75°
18
90°
77°
19
90°
66°
20
81°
66°
21
81°
68°
22
88°
64°
23
84°
66°
24
86°
66°
25
88°
68°
26
89°
71°
27
81°
69°
28
89°
70°
29
89°
73°
30
88°
71°
31
86°
70°
1
84°
68°
2
82°
67°
3
83°
64°
4
84°
66°
5
88°
68°
6
89°
70°
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 81° to 89°, with overnight lows between 64° and 73°. The average high for May is 86° with an average low of 69°. 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.
