S
M
T
W
T
F
S
26
63°
38°
27
69°
41°
28
67°
49°
29
51°
41°
30
53°
33°
1
40°
36°
2
40°
34°
3
54°
43°
4
61°
49°
5
51°
40°
6
46°
38°
7
45°
35°
8
49°
39°
9
52°
40°
10
56°
41°
11
57°
42°
12
56°
43°
13
58°
42°
14
55°
44°
15
56°
42°
16
56°
41°
17
58°
48°
18
63°
49°
19
63°
49°
20
64°
51°
21
67°
51°
22
63°
50°
23
65°
50°
24
60°
45°
25
59°
45°
26
60°
52°
27
66°
53°
28
68°
52°
29
63°
50°
30
62°
48°
31
64°
45°
1
61°
47°
2
61°
48°
3
62°
47°
4
62°
45°
5
63°
48°
6
63°
47°
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 40° to 68°, with overnight lows between 34° and 53°. The average high for May is 58° with an average low of 45°. 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.