S
M
T
W
T
F
S
30
82°
72°
31
83°
72°
1
84°
71°
2
80°
67°
3
82°
71°
4
82°
67°
5
80°
66°
6
79°
63°
7
78°
63°
8
76°
65°
9
78°
69°
10
71°
66°
11
73°
67°
12
76°
67°
13
77°
66°
14
77°
67°
15
78°
66°
16
76°
65°
17
73°
66°
18
77°
66°
19
73°
65°
20
74°
66°
21
75°
66°
22
76°
65°
23
76°
64°
24
71°
63°
25
65°
61°
26
66°
62°
27
71°
62°
28
72°
61°
29
73°
62°
30
73°
62°
1
72°
61°
2
73°
62°
3
70°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Leamington
Leamington's September 2026 forecast shows daily high temperatures ranging from 65° to 84°, with overnight lows between 61° and 72°. The average high for September is 75° with an average low of 65°. 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 Leamington. See also: October | November | December.