S
M
T
W
T
F
S
26
64°
52°
27
64°
49°
28
71°
51°
29
74°
53°
30
74°
55°
1
75°
56°
2
77°
57°
3
64°
54°
4
65°
52°
5
66°
53°
6
73°
55°
7
78°
56°
8
75°
56°
9
81°
56°
10
82°
58°
11
90°
57°
12
69°
58°
13
73°
55°
14
73°
57°
15
71°
57°
16
72°
56°
17
69°
58°
18
76°
57°
19
84°
61°
20
85°
60°
21
82°
58°
22
74°
57°
23
76°
58°
24
74°
58°
25
72°
57°
26
72°
59°
27
72°
56°
28
74°
59°
29
72°
60°
30
76°
59°
31
75°
61°
1
78°
63°
2
76°
63°
3
75°
61°
4
76°
61°
5
75°
62°
6
77°
61°
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 72° to 78°, with overnight lows between 56° and 63°. The average high for May is 75° 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.
