S
M
T
W
T
F
S
26
80°
61°
27
79°
56°
28
68°
48°
29
66°
39°
30
68°
41°
1
70°
40°
2
70°
45°
3
87°
46°
4
84°
64°
5
69°
48°
6
64°
45°
7
76°
43°
8
82°
50°
9
86°
45°
10
71°
46°
11
79°
40°
12
86°
52°
13
82°
60°
14
89°
63°
15
89°
68°
16
91°
64°
17
89°
71°
18
90°
65°
19
69°
52°
20
70°
55°
21
66°
60°
22
76°
58°
23
79°
57°
24
81°
58°
25
82°
59°
26
80°
62°
27
80°
61°
28
81°
60°
29
84°
61°
30
85°
63°
31
84°
64°
1
86°
65°
2
82°
59°
3
79°
64°
4
86°
63°
5
82°
64°
6
79°
64°
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 86°, with overnight lows between 55° and 65°. The average high for May is 80° with an average low of 61°. 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.
