S
M
T
W
T
F
S
30
69°
56°
31
61°
45°
1
61°
35°
2
58°
42°
3
60°
40°
4
66°
37°
5
68°
49°
6
76°
44°
7
78°
47°
8
80°
47°
9
N/A
10
84°
55°
11
83°
55°
12
84°
55°
13
81°
55°
14
77°
53°
15
71°
49°
16
70°
54°
17
68°
49°
18
67°
46°
19
68°
50°
20
70°
49°
21
66°
47°
22
57°
47°
23
58°
47°
24
57°
44°
25
50°
36°
26
44°
35°
27
43°
34°
28
44°
35°
29
47°
36°
30
51°
37°
1
53°
38°
2
53°
39°
3
52°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Novoaltaysk
Novoaltaysk's September 2026 forecast shows daily high temperatures ranging from 43° to 84°, with overnight lows between 34° and 55°. The average high for September is 62° 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 Novoaltaysk. See also: October | November | December.