S
M
T
W
T
F
S
26
72°
55°
27
73°
54°
28
70°
46°
29
82°
55°
30
75°
57°
1
64°
52°
2
59°
42°
3
69°
46°
4
78°
53°
5
83°
58°
6
84°
64°
7
76°
48°
8
71°
47°
9
76°
53°
10
78°
60°
11
78°
59°
12
81°
61°
13
77°
60°
14
81°
57°
15
83°
62°
16
83°
62°
17
81°
61°
18
81°
63°
19
83°
63°
20
84°
62°
21
85°
63°
22
85°
64°
23
84°
64°
24
85°
63°
25
85°
64°
26
83°
65°
27
83°
64°
28
84°
65°
29
81°
65°
30
83°
64°
31
85°
65°
1
85°
65°
2
87°
66°
3
87°
65°
4
82°
62°
5
79°
60°
6
79°
60°
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 59° to 87°, with overnight lows between 42° and 66°. The average high for May is 80° with an average low of 60°. 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.
