S
M
T
W
T
F
S
30
59°
55°
31
57°
43°
1
63°
43°
2
59°
50°
3
57°
50°
4
64°
48°
5
64°
43°
6
59°
48°
7
57°
48°
8
55°
43°
9
57°
44°
10
58°
41°
11
63°
48°
12
62°
48°
13
55°
42°
14
56°
48°
15
59°
48°
16
54°
45°
17
52°
44°
18
56°
46°
19
57°
47°
20
58°
45°
21
56°
46°
22
51°
46°
23
55°
44°
24
52°
41°
25
53°
40°
26
51°
40°
27
49°
41°
28
48°
39°
29
48°
39°
30
49°
40°
1
48°
38°
2
47°
37°
3
50°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Namsos
Namsos's September 2026 forecast shows daily high temperatures ranging from 47° to 63°, with overnight lows between 37° and 48°. The average high for September is 54° with an average low of 43°. 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 Namsos. See also: October | November | December.
