S
M
T
W
T
F
S
30
72°
59°
31
72°
56°
1
72°
50°
2
68°
58°
3
78°
64°
4
68°
56°
5
72°
51°
6
80°
55°
7
73°
61°
8
64°
55°
9
66°
52°
10
67°
48°
11
70°
50°
12
70°
60°
13
72°
59°
14
73°
60°
15
68°
50°
16
64°
51°
17
64°
48°
18
64°
51°
19
66°
50°
20
68°
51°
21
65°
51°
22
65°
50°
23
66°
51°
24
67°
50°
25
64°
50°
26
63°
49°
27
65°
51°
28
64°
45°
29
59°
44°
30
59°
44°
1
58°
49°
2
63°
49°
3
62°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Somerton
Somerton's September 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 44° and 60°. The average high for September is 65° 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 Somerton. See also: October | November | December.