S
M
T
W
T
F
S
30
71°
52°
31
79°
44°
1
85°
48°
2
82°
49°
3
77°
46°
4
76°
55°
5
74°
54°
6
75°
56°
7
67°
52°
8
69°
46°
9
76°
41°
10
87°
48°
11
63°
49°
12
68°
48°
13
70°
47°
14
61°
45°
15
70°
39°
16
70°
46°
17
76°
44°
18
77°
50°
19
60°
54°
20
72°
44°
21
76°
45°
22
75°
45°
23
78°
53°
24
83°
61°
25
88°
48°
26
63°
41°
27
63°
45°
28
69°
45°
29
74°
47°
30
70°
45°
1
63°
41°
2
63°
41°
3
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Holter Lake Campground
Holter Lake Campground's September 2026 forecast shows daily high temperatures ranging from 63° to 88°, with overnight lows between 41° and 61°. The average high for September is 71° with an average low of 47°. 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 Holter Lake Campground. See also: October | November | December.
