S
M
T
W
T
F
S
30
57°
54°
31
57°
54°
1
57°
48°
2
57°
46°
3
57°
50°
4
63°
48°
5
63°
52°
6
57°
52°
7
57°
52°
8
55°
48°
9
55°
48°
10
55°
46°
11
62°
52°
12
60°
50°
13
55°
47°
14
53°
50°
15
57°
49°
16
53°
46°
17
51°
43°
18
54°
45°
19
55°
48°
20
57°
45°
21
56°
46°
22
50°
41°
23
54°
44°
24
50°
43°
25
50°
41°
26
51°
40°
27
48°
40°
28
47°
41°
29
47°
41°
30
48°
42°
1
47°
40°
2
49°
40°
3
50°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sandnessjoen
Sandnessjoen's September 2026 forecast shows daily high temperatures ranging from 47° to 62°, with overnight lows between 40° and 52°. The average high for September is 53° with an average low of 44°. 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 Sandnessjoen. See also: October | November | December.