S
M
T
W
T
F
S
26
66°
48°
27
65°
45°
28
54°
41°
29
59°
44°
30
65°
46°
1
69°
49°
2
63°
48°
3
60°
43°
4
59°
44°
5
61°
45°
6
60°
44°
7
57°
43°
8
58°
42°
9
55°
41°
10
56°
44°
11
61°
45°
12
58°
44°
13
57°
45°
14
57°
47°
15
60°
48°
16
62°
48°
17
60°
43°
18
63°
49°
19
65°
50°
20
66°
50°
21
66°
51°
22
67°
50°
23
66°
49°
24
65°
50°
25
64°
50°
26
60°
48°
27
59°
46°
28
59°
48°
29
60°
45°
30
64°
50°
31
66°
50°
1
66°
50°
2
65°
51°
3
67°
51°
4
64°
50°
5
63°
51°
6
61°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sleaford
Sleaford's May 2026 forecast shows daily high temperatures ranging from 54° to 69°, with overnight lows between 41° and 51°. The average high for May is 62° with an average low of 47°. 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 Sleaford. See also: June | July | August.
