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
65°
48°
10
67°
56°
11
70°
49°
12
70°
58°
13
72°
53°
14
72°
60°
15
70°
50°
16
66°
49°
17
67°
51°
18
69°
52°
19
71°
51°
20
70°
52°
21
69°
51°
22
67°
52°
23
68°
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 72°, with overnight lows between 44° and 60°. 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 Somerton. See also: October | November | December.