S
M
T
W
T
F
S
30
71°
59°
31
70°
54°
1
71°
51°
2
67°
58°
3
77°
64°
4
67°
57°
5
70°
53°
6
78°
55°
7
72°
62°
8
64°
55°
9
65°
49°
10
67°
56°
11
69°
49°
12
69°
58°
13
73°
51°
14
72°
59°
15
70°
50°
16
65°
48°
17
66°
52°
18
69°
52°
19
71°
53°
20
69°
52°
21
68°
51°
22
67°
51°
23
68°
51°
24
66°
50°
25
62°
49°
26
61°
49°
27
65°
50°
28
64°
45°
29
59°
43°
30
58°
44°
1
58°
49°
2
62°
49°
3
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Royal Leamington Spa
Royal Leamington Spa's September 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 43° and 59°. The average high for September is 66° with an average low of 50°. 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 Royal Leamington Spa. See also: October | November | December.