S
M
T
W
T
F
S
26
73°
51°
27
78°
53°
28
81°
54°
29
81°
53°
30
80°
54°
1
83°
55°
2
82°
53°
3
76°
54°
4
76°
54°
5
77°
53°
6
80°
52°
7
80°
51°
8
78°
50°
9
80°
51°
10
83°
55°
11
84°
56°
12
85°
56°
13
86°
57°
14
86°
57°
15
85°
56°
16
84°
55°
17
85°
56°
18
82°
50°
19
80°
50°
20
80°
51°
21
79°
50°
22
79°
52°
23
80°
50°
24
79°
50°
25
80°
48°
26
79°
49°
27
80°
51°
28
81°
52°
29
83°
52°
30
85°
53°
31
86°
52°
1
86°
52°
2
84°
53°
3
85°
52°
4
84°
53°
5
85°
56°
6
89°
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 73° to 89°, with overnight lows between 48° and 60°. The average high for May is 82° 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.