S
M
T
W
T
F
S
30
72°
65°
31
74°
60°
1
78°
64°
2
84°
67°
3
79°
65°
4
76°
60°
5
75°
59°
6
72°
54°
7
76°
53°
8
74°
56°
9
73°
63°
10
75°
58°
11
69°
48°
12
82°
49°
13
78°
64°
14
67°
50°
15
68°
48°
16
76°
61°
17
76°
60°
18
70°
40°
19
66°
48°
20
60°
42°
21
62°
41°
22
62°
41°
23
64°
41°
24
67°
48°
25
64°
46°
26
67°
45°
27
65°
46°
28
64°
47°
29
67°
49°
30
68°
50°
1
66°
42°
2
61°
41°
3
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lowville
Lowville's September 2026 forecast shows daily high temperatures ranging from 59° to 70°, with overnight lows between 40° and 50°. The average high for September is 65° with an average low of 45°. 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 Lowville. See also: October | November | December.