S
M
T
W
T
F
S
26
58°
42°
27
73°
42°
28
70°
48°
29
55°
44°
30
51°
35°
1
45°
34°
2
45°
35°
3
61°
32°
4
73°
48°
5
69°
48°
6
52°
42°
7
55°
36°
8
59°
41°
9
70°
51°
10
55°
40°
11
56°
36°
12
62°
32°
13
63°
43°
14
53°
43°
15
65°
38°
16
71°
50°
17
84°
60°
18
88°
65°
19
87°
52°
20
57°
45°
21
58°
47°
22
62°
52°
23
64°
58°
24
67°
54°
25
71°
58°
26
72°
57°
27
71°
55°
28
74°
54°
29
74°
55°
30
76°
58°
31
78°
61°
1
74°
52°
2
74°
58°
3
75°
57°
4
68°
57°
5
69°
56°
6
72°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ashtabula
Ashtabula's May 2026 forecast shows daily high temperatures ranging from 57° to 87°, with overnight lows between 45° and 61°. The average high for May is 71° 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 Ashtabula. See also: June | July | August.
