S
M
T
W
T
F
S
26
94°
76°
27
95°
77°
28
95°
77°
29
94°
78°
30
96°
78°
31
96°
77°
1
95°
77°
2
96°
78°
3
96°
78°
4
95°
77°
5
96°
78°
6
97°
78°
7
95°
76°
8
92°
75°
9
92°
75°
10
93°
77°
11
95°
77°
12
96°
78°
13
96°
78°
14
95°
76°
15
94°
76°
16
93°
73°
17
92°
72°
18
92°
72°
19
91°
70°
20
90°
71°
21
91°
72°
22
86°
66°
23
84°
64°
24
83°
63°
25
83°
63°
26
84°
64°
27
83°
63°
28
84°
64°
29
85°
68°
30
88°
69°
31
90°
70°
1
90°
70°
2
89°
69°
3
90°
69°
4
90°
70°
5
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Washington
Mount Washington's August 2026 forecast shows daily high temperatures ranging from 83° to 97°, with overnight lows between 63° and 78°. The average high for August is 91° with an average low of 73°. 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 Mount Washington. See also: September | October | November.
