S
M
T
W
T
F
S
30
93°
66°
31
95°
68°
1
95°
70°
2
94°
68°
3
94°
68°
4
95°
70°
5
94°
69°
6
93°
70°
7
93°
69°
8
91°
69°
9
92°
68°
10
92°
68°
11
91°
67°
12
91°
68°
13
92°
67°
14
90°
67°
15
90°
66°
16
86°
65°
17
84°
65°
18
87°
64°
19
84°
65°
20
84°
65°
21
85°
64°
22
83°
64°
23
84°
63°
24
87°
64°
25
87°
63°
26
88°
63°
27
87°
62°
28
86°
62°
29
85°
61°
30
86°
60°
1
84°
61°
2
86°
62°
3
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arp
Arp's September 2026 forecast shows daily high temperatures ranging from 79° to 95°, with overnight lows between 55° and 70°. The average high for September is 89° with an average low of 65°. 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 Arp. See also: October | November | December.
