S
M
T
W
T
F
S
26
52°
38°
27
62°
37°
28
61°
41°
29
56°
41°
30
52°
46°
1
59°
46°
2
53°
47°
3
55°
44°
4
61°
47°
5
58°
51°
6
59°
53°
7
61°
49°
8
61°
42°
9
59°
50°
10
60°
51°
11
58°
48°
12
60°
48°
13
59°
51°
14
57°
48°
15
61°
46°
16
68°
46°
17
80°
57°
18
74°
56°
19
72°
60°
20
83°
62°
21
65°
52°
22
N/A
23
58°
50°
24
57°
54°
25
67°
53°
26
71°
59°
27
74°
56°
28
71°
51°
29
64°
48°
30
65°
53°
31
67°
50°
1
70°
52°
2
71°
55°
3
71°
54°
4
73°
56°
5
74°
51°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Northwest Harbor
Northwest Harbor's May 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 48° and 59°. The average high for May is 68° with an average low of 53°. 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 Northwest Harbor. See also: June | July | August.
