S
M
T
W
T
F
S
30
93°
61°
31
94°
65°
1
97°
66°
2
98°
66°
3
99°
65°
4
98°
65°
5
98°
64°
6
96°
64°
7
92°
63°
8
92°
59°
9
91°
61°
10
90°
62°
11
89°
62°
12
90°
66°
13
91°
64°
14
90°
60°
15
90°
57°
16
94°
57°
17
91°
57°
18
Hist. Avg.
92°
59°
19
Hist. Avg.
92°
59°
20
Hist. Avg.
91°
59°
21
Hist. Avg.
91°
59°
22
Hist. Avg.
90°
58°
23
Hist. Avg.
90°
58°
24
Hist. Avg.
90°
58°
25
Hist. Avg.
89°
58°
26
Hist. Avg.
89°
58°
27
Hist. Avg.
89°
57°
28
Hist. Avg.
88°
57°
29
Hist. Avg.
88°
57°
30
Hist. Avg.
88°
57°
1
Hist. Avg.
87°
56°
2
Hist. Avg.
87°
56°
3
Hist. Avg.
86°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Arrowhead
Arrowhead's September 2026 forecast shows daily high temperatures ranging from 89° to 99°, with overnight lows between 57° and 66°. The average high for September is 93° with an average low of 62°. 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 Arrowhead. See also: October | November | December.
