S
M
T
W
T
F
S
30
55°
38°
31
54°
41°
1
53°
38°
2
54°
39°
3
54°
41°
4
55°
40°
5
53°
38°
6
53°
37°
7
52°
41°
8
52°
40°
9
53°
32°
10
52°
36°
11
52°
39°
12
54°
41°
13
51°
41°
14
55°
40°
15
55°
37°
16
53°
37°
17
54°
36°
18
49°
32°
19
54°
37°
20
54°
36°
21
48°
33°
22
51°
34°
23
48°
37°
24
49°
36°
25
Hist. Avg.
50°
25°
26
Hist. Avg.
49°
25°
27
Hist. Avg.
48°
25°
28
Hist. Avg.
48°
24°
29
Hist. Avg.
47°
24°
30
Hist. Avg.
46°
24°
1
Hist. Avg.
46°
23°
2
Hist. Avg.
45°
23°
3
Hist. Avg.
44°
23°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Matanuska-Susitna Census Subarea
Matanuska-Susitna Census Subarea's September 2026 forecast shows daily high temperatures ranging from 48° to 55°, with overnight lows between 32° and 41°. The average high for September is 53° with an average low of 38°. 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 Matanuska-Susitna Census Subarea. See also: October | November | December.
