S
M
T
W
T
F
S
26
66°
51°
27
69°
52°
28
76°
46°
29
81°
49°
30
85°
51°
1
88°
55°
2
91°
57°
3
78°
55°
4
65°
56°
5
71°
56°
6
81°
50°
7
88°
56°
8
90°
59°
9
90°
55°
10
95°
61°
11
100°
63°
12
99°
62°
13
84°
56°
14
87°
54°
15
89°
58°
16
83°
55°
17
80°
53°
18
83°
51°
19
88°
52°
20
91°
52°
21
94°
57°
22
95°
59°
23
91°
56°
24
89°
56°
25
87°
54°
26
84°
53°
27
83°
54°
28
80°
50°
29
84°
52°
30
89°
51°
31
88°
52°
1
97°
61°
2
100°
61°
3
96°
60°
4
94°
59°
5
87°
56°
6
91°
60°
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 80° to 100°, with overnight lows between 50° and 61°. The average high for May is 89° with an average low of 56°. 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.