S
M
T
W
T
F
S
26
93°
68°
27
92°
67°
28
90°
65°
29
89°
65°
30
91°
66°
31
95°
69°
1
95°
68°
2
95°
68°
3
94°
67°
4
90°
67°
5
90°
66°
6
91°
71°
7
91°
69°
8
90°
71°
9
91°
69°
10
88°
69°
11
88°
70°
12
89°
68°
13
89°
69°
14
87°
66°
15
87°
68°
16
89°
68°
17
86°
65°
18
87°
67°
19
89°
68°
20
90°
67°
21
90°
67°
22
91°
68°
23
91°
69°
24
90°
69°
25
91°
68°
26
90°
68°
27
90°
67°
28
89°
68°
29
89°
69°
30
90°
68°
31
90°
68°
1
89°
67°
2
90°
67°
3
88°
66°
4
87°
67°
5
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in La Crescenta-Montrose
La Crescenta-Montrose's August 2026 forecast shows daily high temperatures ranging from 86° to 95°, with overnight lows between 65° and 71°. The average high for August is 90° with an average low of 68°. 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 La Crescenta-Montrose. See also: September | October | November.