S
M
T
W
T
F
S
26
64°
58°
27
71°
58°
28
71°
54°
29
73°
52°
30
71°
51°
31
78°
54°
1
69°
56°
2
71°
54°
3
77°
48°
4
N/A
5
84°
56°
6
77°
55°
7
75°
54°
8
76°
53°
9
71°
54°
10
73°
55°
11
72°
54°
12
73°
55°
13
73°
54°
14
71°
53°
15
73°
54°
16
72°
52°
17
73°
53°
18
72°
53°
19
73°
52°
20
70°
52°
21
69°
55°
22
68°
53°
23
71°
55°
24
67°
49°
25
73°
54°
26
75°
56°
27
74°
56°
28
74°
55°
29
68°
52°
30
67°
49°
31
68°
52°
1
66°
53°
2
67°
50°
3
68°
49°
4
69°
52°
5
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Montesano
Montesano's August 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 49° and 56°. The average high for August is 72° with an average low of 53°. 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 Montesano. See also: September | October | November.
