S
M
T
W
T
F
S
30
87°
70°
31
87°
70°
1
86°
69°
2
88°
70°
3
85°
69°
4
82°
65°
5
81°
64°
6
84°
65°
7
86°
68°
8
87°
69°
9
86°
69°
10
86°
68°
11
87°
69°
12
86°
69°
13
86°
68°
14
85°
66°
15
86°
66°
16
86°
64°
17
84°
65°
18
75°
58°
19
78°
57°
20
75°
56°
21
76°
57°
22
77°
58°
23
78°
62°
24
81°
56°
25
79°
55°
26
73°
54°
27
75°
56°
28
77°
57°
29
76°
61°
30
79°
55°
1
75°
59°
2
77°
59°
3
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Parker
Parker's September 2026 forecast shows daily high temperatures ranging from 73° to 88°, with overnight lows between 54° and 70°. The average high for September is 82° with an average low of 63°. 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 Parker. See also: October | November | December.