S
M
T
W
T
F
S
30
81°
58°
31
82°
62°
1
81°
62°
2
79°
60°
3
81°
52°
4
75°
52°
5
74°
55°
6
75°
60°
7
80°
58°
8
77°
56°
9
73°
57°
10
75°
59°
11
78°
58°
12
81°
59°
13
80°
58°
14
81°
58°
15
80°
56°
16
78°
56°
17
74°
49°
18
73°
48°
19
70°
46°
20
69°
45°
21
68°
46°
22
69°
52°
23
69°
46°
24
72°
46°
25
70°
53°
26
72°
52°
27
73°
53°
28
75°
52°
29
74°
50°
30
73°
48°
1
68°
49°
2
73°
50°
3
66°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tri-Lakes
Tri-Lakes's September 2026 forecast shows daily high temperatures ranging from 66° to 82°, with overnight lows between 44° and 62°. The average high for September is 75° with an average low of 53°. 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 Tri-Lakes. See also: October | November | December.
