S
M
T
W
T
F
S
30
36°
27°
31
34°
28°
1
35°
27°
2
34°
25°
3
33°
25°
4
32°
26°
5
32°
25°
6
33°
23°
7
31°
27°
8
31°
25°
9
35°
21°
10
32°
23°
11
30°
21°
12
31°
20°
13
28°
21°
14
27°
20°
15
28°
19°
16
27°
17°
17
27°
23°
18
28°
20°
19
31°
19°
20
26°
23°
21
31°
23°
22
30°
21°
23
31°
20°
24
30°
19°
25
29°
11°
26
28°
11°
27
22°
12°
28
20°
15°
29
21°
17°
30
24°
14°
1
25°
13°
2
23°
15°
3
19°
9°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grise Fiord
Grise Fiord's September 2026 forecast shows daily high temperatures ranging from 19° to 36°, with overnight lows between 9° and 28°. The average high for September is 29° with an average low of 20°. 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 Grise Fiord. See also: October | November | December.