S
M
T
W
T
F
S
30
71°
52°
31
71°
53°
1
70°
56°
2
74°
56°
3
79°
51°
4
80°
56°
5
77°
51°
6
71°
50°
7
76°
54°
8
68°
50°
9
69°
54°
10
70°
55°
11
67°
48°
12
68°
50°
13
68°
51°
14
67°
49°
15
66°
44°
16
65°
45°
17
Hist. Avg.
69°
48°
18
Hist. Avg.
69°
48°
19
Hist. Avg.
69°
48°
20
Hist. Avg.
68°
48°
21
Hist. Avg.
68°
48°
22
Hist. Avg.
68°
47°
23
Hist. Avg.
67°
47°
24
Hist. Avg.
67°
47°
25
Hist. Avg.
67°
47°
26
Hist. Avg.
66°
47°
27
Hist. Avg.
66°
47°
28
Hist. Avg.
66°
46°
29
Hist. Avg.
65°
46°
30
Hist. Avg.
65°
46°
1
Hist. Avg.
65°
46°
2
Hist. Avg.
64°
46°
3
Hist. Avg.
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Scowlitz
Scowlitz's September 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 44° and 56°. The average high for September is 71° with an average low of 51°. 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 Scowlitz. See also: October | November | December.