S
M
T
W
T
F
S
30
67°
56°
31
73°
52°
1
71°
54°
2
70°
60°
3
69°
55°
4
63°
50°
5
69°
54°
6
69°
51°
7
68°
56°
8
70°
51°
9
70°
55°
10
70°
51°
11
63°
52°
12
69°
51°
13
68°
51°
14
70°
52°
15
72°
53°
16
71°
52°
17
73°
54°
18
73°
53°
19
69°
55°
20
67°
53°
21
65°
49°
22
62°
53°
23
61°
52°
24
62°
53°
25
65°
53°
26
62°
52°
27
60°
52°
28
59°
49°
29
58°
47°
30
58°
50°
1
63°
51°
2
66°
52°
3
65°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in White Rock
White Rock's September 2026 forecast shows daily high temperatures ranging from 58° to 73°, with overnight lows between 47° and 55°. The average high for September is 66° with an average low of 52°. 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 White Rock. See also: October | November | December.