S
M
T
W
T
F
S
30
73°
53°
31
76°
48°
1
77°
54°
2
76°
58°
3
80°
62°
4
74°
61°
5
70°
54°
6
72°
53°
7
78°
60°
8
72°
55°
9
71°
64°
10
76°
53°
11
70°
51°
12
78°
63°
13
77°
59°
14
72°
55°
15
71°
56°
16
69°
53°
17
68°
55°
18
69°
53°
19
68°
52°
20
65°
49°
21
63°
54°
22
64°
54°
23
69°
53°
24
70°
52°
25
71°
53°
26
70°
49°
27
63°
47°
28
68°
51°
29
71°
52°
30
72°
53°
1
72°
53°
2
71°
52°
3
69°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Champlain
Champlain's September 2026 forecast shows daily high temperatures ranging from 63° to 78°, with overnight lows between 47° and 64°. The average high for September is 70° with an average low of 54°. 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 Champlain. See also: October | November | December.
