S
M
T
W
T
F
S
26
75°
50°
27
75°
51°
28
61°
47°
29
59°
40°
30
59°
38°
1
60°
34°
2
61°
38°
3
75°
46°
4
84°
47°
5
58°
45°
6
57°
36°
7
69°
37°
8
73°
43°
9
76°
44°
10
69°
36°
11
74°
41°
12
82°
53°
13
74°
50°
14
79°
49°
15
87°
57°
16
82°
61°
17
83°
62°
18
74°
63°
19
65°
45°
20
65°
43°
21
67°
50°
22
68°
53°
23
76°
53°
24
81°
57°
25
84°
58°
26
85°
58°
27
82°
63°
28
84°
62°
29
75°
57°
30
78°
57°
31
74°
58°
1
76°
55°
2
78°
57°
3
78°
58°
4
79°
59°
5
82°
61°
6
88°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chillicothe
Chillicothe's May 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 55° and 70°. The average high for May is 80° with an average low of 59°. 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 Chillicothe. See also: June | July | August.
