S
M
T
W
T
F
S
30
51°
44°
31
48°
41°
1
52°
43°
2
53°
46°
3
53°
50°
4
53°
50°
5
53°
48°
6
55°
46°
7
54°
45°
8
53°
48°
9
53°
49°
10
53°
49°
11
53°
47°
12
51°
43°
13
54°
41°
14
53°
45°
15
51°
48°
16
51°
46°
17
51°
45°
18
52°
44°
19
47°
37°
20
45°
37°
21
46°
35°
22
46°
35°
23
47°
35°
24
49°
39°
25
51°
42°
26
50°
46°
27
49°
45°
28
46°
39°
29
42°
30°
30
40°
26°
1
40°
28°
2
40°
29°
3
40°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Mertarvik
Mertarvik's September 2026 forecast shows daily high temperatures ranging from 40° to 40°, with overnight lows between 28° and 32°. The average high for September is 40° with an average low of 30°. 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 Mertarvik. See also: October | November | December.
