S
M
T
W
T
F
S
26
65°
32°
27
68°
34°
28
60°
35°
29
53°
44°
30
48°
45°
1
64°
37°
2
50°
35°
3
53°
35°
4
68°
33°
5
69°
49°
6
62°
53°
7
65°
40°
8
60°
36°
9
59°
33°
10
61°
50°
11
63°
42°
12
61°
37°
13
54°
35°
14
66°
49°
15
62°
51°
16
73°
50°
17
79°
46°
18
71°
46°
19
90°
67°
20
89°
52°
21
64°
40°
22
64°
43°
23
65°
46°
24
64°
45°
25
66°
48°
26
68°
51°
27
68°
52°
28
70°
52°
29
68°
48°
30
63°
52°
31
65°
51°
1
68°
50°
2
65°
50°
3
64°
49°
4
64°
53°
5
65°
53°
6
73°
54°
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 63° to 90°, with overnight lows between 40° and 67°. The average high for May is 69° with an average low of 50°. 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.
