S
M
T
W
T
F
S
26
79°
55°
27
82°
57°
28
63°
50°
29
61°
45°
30
63°
43°
1
63°
43°
2
64°
42°
3
78°
58°
4
81°
63°
5
74°
47°
6
57°
38°
7
61°
48°
8
69°
53°
9
74°
56°
10
71°
53°
11
74°
54°
12
76°
59°
13
77°
57°
14
77°
56°
15
74°
54°
16
77°
59°
17
73°
58°
18
72°
59°
19
77°
58°
20
72°
55°
21
76°
51°
22
69°
51°
23
69°
53°
24
70°
54°
25
69°
52°
26
70°
52°
27
71°
53°
28
72°
57°
29
73°
58°
30
75°
62°
31
74°
60°
1
74°
57°
2
75°
56°
3
75°
63°
4
76°
63°
5
76°
64°
6
77°
64°
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 57° to 81°, with overnight lows between 38° and 64°. The average high for May is 73° with an average low of 55°. 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.