S
M
T
W
T
F
S
26
82°
66°
27
87°
69°
28
87°
70°
29
82°
70°
30
87°
66°
31
83°
63°
1
81°
63°
2
82°
64°
3
81°
67°
4
87°
70°
5
87°
69°
6
88°
67°
7
85°
67°
8
87°
68°
9
87°
68°
10
85°
60°
11
82°
61°
12
83°
62°
13
81°
61°
14
83°
62°
15
81°
63°
16
81°
67°
17
80°
65°
18
81°
63°
19
80°
60°
20
80°
61°
21
81°
63°
22
82°
66°
23
81°
65°
24
85°
66°
25
85°
58°
26
84°
58°
27
79°
59°
28
78°
60°
29
77°
62°
30
79°
63°
31
78°
64°
1
83°
59°
2
78°
58°
3
78°
58°
4
77°
57°
5
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Caldwell
Caldwell's August 2026 forecast shows daily high temperatures ranging from 77° to 88°, with overnight lows between 57° and 70°. The average high for August is 82° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Caldwell. See also: September | October | November.
