S
M
T
W
T
F
S
26
83°
58°
27
86°
58°
28
87°
59°
29
91°
58°
30
93°
56°
31
86°
58°
1
87°
58°
2
88°
57°
3
86°
56°
4
84°
56°
5
86°
57°
6
89°
57°
7
86°
58°
8
83°
57°
9
85°
55°
10
85°
56°
11
86°
58°
12
91°
57°
13
92°
58°
14
87°
58°
15
91°
57°
16
90°
58°
17
85°
55°
18
84°
55°
19
85°
54°
20
84°
57°
21
86°
53°
22
84°
57°
23
84°
54°
24
83°
54°
25
83°
54°
26
84°
55°
27
84°
51°
28
83°
53°
29
83°
53°
30
85°
54°
31
86°
53°
1
85°
50°
2
83°
50°
3
81°
54°
4
82°
50°
5
85°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Montbello
Montbello's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 50° and 59°. The average high for August is 86° with an average low of 55°. 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 Montbello. See also: September | October | November.
