S
M
T
W
T
F
S
30
100°
74°
31
99°
77°
1
100°
83°
2
101°
75°
3
100°
75°
4
101°
74°
5
101°
73°
6
100°
74°
7
99°
74°
8
100°
76°
9
99°
75°
10
96°
70°
11
92°
69°
12
90°
69°
13
90°
66°
14
87°
64°
15
83°
59°
16
87°
65°
17
86°
64°
18
76°
59°
19
80°
63°
20
82°
64°
21
81°
63°
22
82°
62°
23
84°
61°
24
84°
61°
25
83°
60°
26
77°
54°
27
72°
49°
28
72°
48°
29
71°
51°
30
77°
54°
1
78°
58°
2
78°
51°
3
69°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Route 66 Airfield
Route 66 Airfield's September 2026 forecast shows daily high temperatures ranging from 69° to 101°, with overnight lows between 48° and 76°. The average high for September is 86° 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 Route 66 Airfield. See also: October | November | December.
