S
M
T
W
T
F
S
30
73°
59°
31
72°
54°
1
72°
50°
2
71°
62°
3
74°
63°
4
69°
51°
5
70°
53°
6
79°
57°
7
70°
54°
8
65°
51°
9
64°
48°
10
63°
49°
11
64°
49°
12
64°
50°
13
65°
51°
14
67°
54°
15
67°
52°
16
62°
48°
17
63°
50°
18
63°
48°
19
64°
52°
20
66°
53°
21
67°
54°
22
66°
53°
23
66°
52°
24
63°
51°
25
65°
52°
26
64°
51°
27
65°
49°
28
64°
51°
29
63°
52°
30
64°
50°
1
59°
47°
2
58°
46°
3
59°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Cheltenham
Cheltenham's September 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 44° and 63°. The average high for September is 65° with an average low of 51°. 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 Cheltenham. See also: October | November | December.
