S
M
T
W
T
F
S
30
85°
54°
31
84°
56°
1
84°
55°
2
85°
54°
3
84°
57°
4
84°
53°
5
82°
54°
6
83°
55°
7
82°
52°
8
79°
51°
9
80°
49°
10
78°
50°
11
80°
47°
12
82°
50°
13
82°
47°
14
81°
52°
15
81°
52°
16
78°
51°
17
79°
45°
18
76°
42°
19
74°
44°
20
74°
44°
21
75°
47°
22
78°
51°
23
79°
51°
24
73°
49°
25
72°
50°
26
73°
48°
27
72°
46°
28
71°
44°
29
68°
45°
30
69°
44°
1
Hist. Avg.
69°
44°
2
Hist. Avg.
68°
43°
3
Hist. Avg.
68°
43°
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 68° to 85°, with overnight lows between 42° and 57°. The average high for September is 78° 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 White Rock. See also: October | November | December.
