S
M
T
W
T
F
S
30
74°
48°
31
86°
51°
1
66°
57°
2
66°
56°
3
62°
49°
4
72°
47°
5
75°
50°
6
75°
53°
7
74°
54°
8
80°
51°
9
86°
51°
10
72°
54°
11
69°
50°
12
64°
51°
13
62°
53°
14
69°
55°
15
69°
52°
16
81°
49°
17
84°
49°
18
72°
53°
19
71°
52°
20
73°
50°
21
72°
55°
22
73°
51°
23
67°
48°
24
69°
47°
25
65°
50°
26
67°
43°
27
72°
46°
28
70°
40°
29
65°
57°
30
70°
51°
1
76°
50°
2
75°
54°
3
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Longview
Longview's September 2026 forecast shows daily high temperatures ranging from 75° to 77°, with overnight lows between 50° and 54°. The average high for September is 76° 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 Longview. See also: October | November | December.
