S
M
T
W
T
F
S
26
63°
38°
27
71°
33°
28
70°
36°
29
67°
42°
30
56°
47°
1
63°
37°
2
56°
46°
3
55°
34°
4
70°
32°
5
79°
43°
6
70°
54°
7
62°
38°
8
62°
36°
9
63°
40°
10
70°
51°
11
61°
39°
12
64°
37°
13
66°
41°
14
60°
49°
15
63°
45°
16
76°
55°
17
88°
54°
18
77°
59°
19
88°
64°
20
82°
55°
21
67°
45°
22
66°
48°
23
70°
48°
24
69°
49°
25
71°
54°
26
75°
53°
27
76°
54°
28
74°
51°
29
68°
51°
30
68°
55°
31
72°
55°
1
69°
54°
2
70°
52°
3
69°
52°
4
69°
50°
5
70°
56°
6
71°
57°
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 63° to 88°, with overnight lows between 45° and 64°. The average high for May is 73° 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 Exeter. See also: June | July | August.