S
M
T
W
T
F
S
26
87°
58°
27
93°
60°
28
89°
58°
29
93°
57°
30
92°
62°
31
90°
60°
1
92°
59°
2
91°
59°
3
86°
58°
4
86°
59°
5
87°
59°
6
89°
56°
7
91°
58°
8
88°
59°
9
86°
58°
10
88°
59°
11
88°
59°
12
89°
58°
13
87°
61°
14
90°
60°
15
90°
58°
16
84°
59°
17
85°
57°
18
84°
54°
19
87°
58°
20
89°
57°
21
86°
58°
22
84°
57°
23
84°
56°
24
83°
58°
25
82°
55°
26
81°
53°
27
82°
52°
28
82°
51°
29
83°
53°
30
82°
52°
31
82°
55°
1
84°
52°
2
82°
52°
3
81°
54°
4
83°
51°
5
82°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Montrose
Montrose's August 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 51° and 62°. The average high for August is 86° with an average low of 57°. 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 Montrose. See also: September | October | November.