S
M
T
W
T
F
S
30
78°
49°
31
77°
45°
1
78°
49°
2
80°
49°
3
81°
48°
4
79°
45°
5
78°
46°
6
77°
48°
7
76°
47°
8
72°
43°
9
73°
40°
10
71°
41°
11
75°
40°
12
76°
40°
13
76°
42°
14
75°
47°
15
76°
44°
16
75°
41°
17
72°
37°
18
69°
35°
19
66°
36°
20
68°
36°
21
68°
40°
22
72°
44°
23
73°
43°
24
65°
44°
25
64°
43°
26
65°
38°
27
63°
37°
28
64°
41°
29
65°
40°
30
64°
38°
1
Hist. Avg.
71°
36°
2
Hist. Avg.
70°
36°
3
Hist. Avg.
70°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Navajo
Navajo's September 2026 forecast shows daily high temperatures ranging from 63° to 81°, with overnight lows between 35° and 49°. The average high for September is 72° with an average low of 42°. 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 Navajo. See also: October | November | December.