S
M
T
W
T
F
S
26
61°
44°
27
73°
42°
28
64°
46°
29
66°
50°
30
66°
50°
1
66°
47°
2
63°
52°
3
62°
47°
4
76°
49°
5
86°
61°
6
72°
64°
7
67°
46°
8
68°
53°
9
66°
47°
10
79°
56°
11
61°
45°
12
61°
45°
13
63°
52°
14
65°
50°
15
70°
56°
16
70°
52°
17
66°
52°
18
69°
54°
19
73°
53°
20
67°
49°
21
68°
50°
22
67°
51°
23
68°
50°
24
69°
51°
25
72°
56°
26
76°
57°
27
72°
55°
28
75°
55°
29
72°
52°
30
76°
58°
31
80°
60°
1
78°
60°
2
77°
58°
3
78°
60°
4
81°
62°
5
81°
62°
6
80°
61°
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 61° to 81°, with overnight lows between 45° and 62°. The average high for May is 71° with an average low of 54°. 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.
