S
M
T
W
T
F
S
30
80°
44°
31
80°
43°
1
81°
50°
2
86°
52°
3
88°
42°
4
77°
46°
5
78°
44°
6
83°
41°
7
78°
44°
8
77°
45°
9
80°
45°
10
83°
44°
11
83°
49°
12
84°
49°
13
88°
47°
14
87°
39°
15
77°
38°
16
74°
37°
17
73°
37°
18
73°
40°
19
76°
43°
20
83°
45°
21
85°
45°
22
80°
39°
23
72°
33°
24
71°
34°
25
70°
34°
26
69°
35°
27
69°
36°
28
72°
39°
29
71°
35°
30
78°
42°
1
78°
41°
2
73°
44°
3
Hist. Avg.
74°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in High Desert
High Desert's September 2026 forecast shows daily high temperatures ranging from 69° to 88°, with overnight lows between 33° and 52°. The average high for September is 78° 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 High Desert. See also: October | November | December.
