S
M
T
W
T
F
S
26
63°
44°
27
75°
35°
28
72°
51°
29
65°
49°
30
52°
35°
1
57°
32°
2
N/A
3
59°
45°
4
71°
56°
5
75°
58°
6
64°
46°
7
53°
35°
8
54°
39°
9
56°
39°
10
60°
41°
11
61°
41°
12
60°
44°
13
67°
48°
14
69°
49°
15
68°
47°
16
74°
52°
17
75°
53°
18
75°
52°
19
72°
52°
20
76°
51°
21
73°
49°
22
71°
45°
23
65°
44°
24
67°
45°
25
67°
47°
26
68°
46°
27
67°
46°
28
68°
47°
29
69°
46°
30
69°
47°
31
74°
56°
1
71°
53°
2
72°
49°
3
72°
52°
4
74°
56°
5
76°
53°
6
80°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Jefferson
Jefferson's May 2026 forecast shows daily high temperatures ranging from 53° to 80°, with overnight lows between 35° and 58°. The average high for May is 68° 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.
