S
M
T
W
T
F
S
26
70°
50°
27
73°
50°
28
68°
50°
29
64°
46°
30
55°
41°
1
63°
36°
2
50°
36°
3
57°
28°
4
68°
43°
5
68°
54°
6
64°
50°
7
54°
39°
8
63°
34°
9
64°
46°
10
72°
46°
11
61°
41°
12
68°
39°
13
64°
52°
14
47°
34°
15
63°
56°
16
71°
60°
17
77°
62°
18
78°
65°
19
82°
59°
20
72°
52°
21
64°
52°
22
66°
51°
23
67°
51°
24
68°
55°
25
70°
56°
26
71°
57°
27
72°
51°
28
72°
55°
29
73°
56°
30
72°
55°
31
67°
52°
1
67°
51°
2
68°
50°
3
68°
50°
4
71°
55°
5
75°
57°
6
76°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Exeter
Exeter's May 2026 forecast shows daily high temperatures ranging from 47° to 82°, with overnight lows between 34° and 65°. The average high for May is 70° with an average low of 54°. 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 Exeter. See also: June | July | August.