S
M
T
W
T
F
S
26
61°
44°
27
66°
45°
28
64°
49°
29
55°
41°
30
53°
36°
1
47°
34°
2
57°
43°
3
64°
44°
4
71°
42°
5
56°
38°
6
49°
36°
7
51°
37°
8
59°
41°
9
64°
43°
10
60°
43°
11
62°
45°
12
65°
46°
13
63°
45°
14
68°
47°
15
61°
45°
16
62°
45°
17
63°
53°
18
67°
54°
19
65°
54°
20
69°
55°
21
70°
54°
22
65°
54°
23
70°
49°
24
64°
47°
25
64°
50°
26
66°
57°
27
69°
54°
28
67°
53°
29
67°
49°
30
71°
50°
31
68°
49°
1
68°
55°
2
77°
53°
3
68°
52°
4
69°
51°
5
69°
51°
6
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Jefferson
Jefferson's May 2026 forecast shows daily high temperatures ranging from 49° to 77°, with overnight lows between 36° and 57°. The average high for May is 65° 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 Jefferson. See also: June | July | August.
