S
M
T
W
T
F
S
26
67°
26°
27
74°
29°
28
67°
30°
29
66°
30°
30
51°
41°
1
54°
31°
2
49°
35°
3
50°
31°
4
59°
43°
5
70°
50°
6
61°
42°
7
55°
33°
8
49°
30°
9
50°
36°
10
56°
38°
11
58°
35°
12
57°
36°
13
58°
39°
14
57°
41°
15
64°
38°
16
62°
36°
17
61°
35°
18
63°
44°
19
63°
44°
20
67°
43°
21
71°
45°
22
70°
42°
23
61°
40°
24
63°
42°
25
64°
39°
26
65°
39°
27
65°
42°
28
63°
42°
29
65°
47°
30
69°
45°
31
69°
40°
1
65°
39°
2
64°
40°
3
66°
40°
4
64°
41°
5
65°
41°
6
66°
44°
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 71°, with overnight lows between 30° and 50°. The average high for May is 62° with an average low of 40°. 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.
