S
M
T
W
T
F
S
26
80°
63°
27
82°
63°
28
83°
62°
29
84°
64°
30
83°
65°
31
85°
65°
1
84°
64°
2
83°
62°
3
79°
58°
4
78°
59°
5
78°
62°
6
79°
62°
7
81°
61°
8
82°
63°
9
83°
63°
10
84°
62°
11
83°
63°
12
82°
62°
13
83°
63°
14
84°
61°
15
84°
62°
16
82°
63°
17
78°
62°
18
84°
63°
19
83°
62°
20
81°
57°
21
83°
54°
22
77°
54°
23
76°
55°
24
77°
56°
25
76°
54°
26
78°
57°
27
76°
54°
28
77°
53°
29
75°
52°
30
75°
51°
31
76°
51°
1
74°
52°
2
73°
53°
3
74°
54°
4
72°
54°
5
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monson
Monson's August 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 51° and 65°. The average high for August is 80° with an average low of 59°. 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 Monson. See also: September | October | November.