S
M
T
W
T
F
S
30
84°
63°
31
84°
63°
1
85°
62°
2
85°
63°
3
84°
62°
4
84°
61°
5
83°
62°
6
85°
63°
7
86°
63°
8
83°
62°
9
79°
61°
10
80°
60°
11
82°
61°
12
83°
61°
13
84°
59°
14
71°
47°
15
71°
55°
16
73°
54°
17
72°
52°
18
82°
57°
19
82°
49°
20
81°
45°
21
70°
46°
22
68°
48°
23
66°
52°
24
69°
47°
25
74°
53°
26
77°
54°
27
75°
55°
28
78°
54°
29
79°
53°
30
77°
42°
1
75°
39°
2
62°
39°
3
63°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lone Tree
Lone Tree's September 2026 forecast shows daily high temperatures ranging from 62° to 86°, with overnight lows between 39° and 63°. The average high for September is 78° with an average low of 55°. 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 Lone Tree. See also: October | November | December.
