S
M
T
W
T
F
S
26
99°
67°
27
94°
63°
28
92°
67°
29
95°
68°
30
88°
63°
31
95°
62°
1
97°
62°
2
98°
65°
3
100°
65°
4
100°
61°
5
97°
61°
6
97°
62°
7
96°
61°
8
89°
61°
9
90°
60°
10
90°
60°
11
92°
61°
12
88°
62°
13
92°
65°
14
84°
56°
15
85°
57°
16
83°
56°
17
83°
56°
18
86°
55°
19
82°
54°
20
82°
55°
21
83°
55°
22
82°
56°
23
81°
57°
24
80°
53°
25
81°
55°
26
81°
54°
27
80°
53°
28
79°
52°
29
80°
53°
30
79°
51°
31
81°
54°
1
83°
55°
2
84°
54°
3
85°
58°
4
79°
57°
5
77°
51°
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 77° to 100°, with overnight lows between 51° and 65°. The average high for August is 87° 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.
