S
M
T
W
T
F
S
26
75°
57°
27
76°
54°
28
63°
47°
29
61°
45°
30
68°
43°
1
67°
39°
2
64°
40°
3
82°
51°
4
84°
61°
5
64°
48°
6
62°
47°
7
71°
43°
8
67°
53°
9
85°
51°
10
69°
53°
11
80°
50°
12
83°
59°
13
79°
54°
14
81°
60°
15
89°
65°
16
89°
66°
17
86°
72°
18
83°
63°
19
66°
53°
20
66°
49°
21
66°
58°
22
71°
60°
23
79°
59°
24
83°
58°
25
85°
61°
26
85°
65°
27
80°
64°
28
81°
66°
29
76°
64°
30
80°
62°
31
84°
60°
1
80°
61°
2
80°
63°
3
82°
62°
4
80°
63°
5
84°
65°
6
82°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Washington
Mount Washington's May 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 58° and 66°. The average high for May is 82° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Mount Washington. See also: June | July | August.
