S
M
T
W
T
F
S
30
59°
45°
31
60°
44°
1
61°
45°
2
62°
47°
3
63°
47°
4
59°
45°
5
60°
47°
6
61°
48°
7
55°
43°
8
56°
38°
9
53°
38°
10
52°
37°
11
52°
37°
12
53°
38°
13
52°
37°
14
53°
42°
15
51°
40°
16
50°
39°
17
50°
41°
18
51°
38°
19
51°
37°
20
50°
36°
21
50°
41°
22
51°
40°
23
53°
44°
24
52°
41°
25
52°
39°
26
50°
39°
27
49°
37°
28
50°
35°
29
51°
33°
30
49°
34°
1
46°
32°
2
48°
41°
3
52°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Matanuska
Matanuska's September 2026 forecast shows daily high temperatures ranging from 46° to 63°, with overnight lows between 32° and 48°. The average high for September is 53° with an average low of 40°. 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. See also: October | November | December.