S
M
T
W
T
F
S
30
74°
54°
31
76°
53°
1
77°
51°
2
73°
46°
3
72°
47°
4
72°
49°
5
73°
49°
6
73°
50°
7
75°
48°
8
73°
47°
9
72°
44°
10
71°
45°
11
71°
46°
12
74°
49°
13
75°
46°
14
74°
45°
15
73°
52°
16
72°
51°
17
68°
52°
18
68°
51°
19
69°
51°
20
68°
50°
21
68°
50°
22
72°
49°
23
71°
50°
24
71°
50°
25
74°
49°
26
74°
49°
27
73°
45°
28
71°
45°
29
69°
46°
30
69°
48°
1
70°
49°
2
73°
48°
3
72°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Arrowbear Lake
Arrowbear Lake's September 2026 forecast shows daily high temperatures ranging from 68° to 77°, with overnight lows between 44° and 54°. The average high for September is 72° with an average low of 49°. 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 Arrowbear Lake. See also: October | November | December.