S
M
T
W
T
F
S
26
58°
42°
27
73°
42°
28
70°
48°
29
54°
41°
30
50°
39°
1
49°
37°
2
46°
37°
3
60°
46°
4
58°
43°
5
56°
45°
6
62°
47°
7
54°
40°
8
52°
40°
9
54°
42°
10
55°
44°
11
59°
45°
12
58°
46°
13
61°
45°
14
62°
48°
15
64°
47°
16
61°
47°
17
63°
51°
18
69°
53°
19
67°
53°
20
70°
54°
21
73°
55°
22
72°
54°
23
71°
53°
24
69°
49°
25
64°
49°
26
67°
56°
27
72°
55°
28
73°
56°
29
70°
55°
30
68°
54°
31
72°
51°
1
67°
51°
2
67°
52°
3
68°
50°
4
68°
49°
5
67°
51°
6
68°
51°
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 46° to 73°, with overnight lows between 37° and 56°. The average high for May is 63° with an average low of 48°. 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.
