S
M
T
W
T
F
S
30
73°
59°
31
70°
55°
1
72°
52°
2
68°
57°
3
73°
63°
4
68°
57°
5
68°
55°
6
75°
52°
7
70°
61°
8
64°
54°
9
64°
52°
10
68°
50°
11
70°
55°
12
70°
52°
13
72°
59°
14
75°
61°
15
70°
55°
16
64°
52°
17
66°
52°
18
66°
52°
19
73°
57°
20
66°
52°
21
70°
48°
22
77°
55°
23
68°
48°
24
66°
45°
25
66°
48°
26
68°
48°
27
70°
45°
28
64°
50°
29
73°
52°
30
75°
54°
1
68°
50°
2
72°
50°
3
N/A
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sleaford
Sleaford's September 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Sleaford. See also: October | November | December.
