S
M
T
W
T
F
S
26
65°
47°
27
65°
48°
28
62°
50°
29
54°
39°
30
55°
34°
1
49°
33°
2
52°
28°
3
60°
40°
4
79°
50°
5
58°
43°
6
56°
36°
7
57°
33°
8
64°
41°
9
72°
43°
10
61°
38°
11
63°
36°
12
69°
34°
13
61°
37°
14
63°
38°
15
69°
40°
16
82°
59°
17
85°
62°
18
83°
66°
19
81°
60°
20
63°
44°
21
68°
47°
22
69°
58°
23
72°
56°
24
78°
55°
25
80°
58°
26
82°
60°
27
83°
62°
28
82°
63°
29
83°
63°
30
82°
62°
31
80°
60°
1
82°
61°
2
81°
55°
3
79°
61°
4
78°
60°
5
76°
54°
6
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Buchanan
Buchanan's May 2026 forecast shows daily high temperatures ranging from 63° to 83°, with overnight lows between 44° and 63°. The average high for May is 77° with an average low of 57°. 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 Buchanan. See also: June | July | August.
