S
M
T
W
T
F
S
26
73°
55°
27
78°
54°
28
77°
60°
29
68°
54°
30
62°
44°
1
61°
42°
2
57°
38°
3
65°
35°
4
79°
53°
5
72°
59°
6
62°
46°
7
64°
44°
8
72°
42°
9
77°
56°
10
75°
56°
11
73°
49°
12
77°
44°
13
75°
55°
14
66°
46°
15
73°
43°
16
82°
62°
17
88°
62°
18
88°
68°
19
89°
67°
20
75°
62°
21
68°
55°
22
69°
59°
23
75°
63°
24
76°
63°
25
78°
65°
26
74°
65°
27
84°
65°
28
86°
63°
29
83°
59°
30
83°
62°
31
80°
59°
1
80°
58°
2
80°
55°
3
81°
56°
4
83°
61°
5
85°
66°
6
88°
68°
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 80° to 88°, with overnight lows between 55° and 68°. The average high for May is 82° with an average low of 60°. 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.
