S
M
T
W
T
F
S
30
78°
58°
31
79°
57°
1
76°
51°
2
76°
51°
3
75°
50°
4
75°
49°
5
76°
50°
6
76°
56°
7
77°
53°
8
75°
55°
9
75°
55°
10
76°
50°
11
77°
56°
12
79°
56°
13
78°
55°
14
81°
54°
15
79°
53°
16
79°
53°
17
71°
54°
18
78°
55°
19
77°
54°
20
76°
52°
21
78°
45°
22
74°
44°
23
75°
50°
24
69°
52°
25
Hist. Avg.
71°
49°
26
Hist. Avg.
70°
49°
27
Hist. Avg.
70°
48°
28
Hist. Avg.
70°
48°
29
Hist. Avg.
69°
48°
30
Hist. Avg.
69°
47°
1
Hist. Avg.
68°
47°
2
Hist. Avg.
68°
47°
3
Hist. Avg.
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Cedar Park
Cedar Park's September 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 44° and 58°. The average high for September is 76° with an average low of 53°. 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 Cedar Park. See also: October | November | December.
