S
M
T
W
T
F
S
30
100°
75°
31
101°
73°
1
100°
76°
2
100°
77°
3
100°
76°
4
99°
73°
5
100°
71°
6
99°
72°
7
97°
71°
8
96°
70°
9
94°
69°
10
89°
61°
11
85°
60°
12
88°
60°
13
87°
61°
14
81°
57°
15
85°
63°
16
86°
62°
17
86°
63°
18
85°
64°
19
85°
64°
20
84°
63°
21
85°
63°
22
84°
62°
23
84°
62°
24
84°
61°
25
83°
60°
26
82°
59°
27
83°
60°
28
83°
60°
29
82°
59°
30
83°
60°
1
82°
59°
2
81°
59°
3
82°
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 81° to 100°, with overnight lows between 57° and 77°. The average high for September is 88° with an average low of 64°. 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.