S
M
T
W
T
F
S
30
75°
50°
31
65°
48°
1
66°
50°
2
64°
46°
3
64°
44°
4
62°
46°
5
62°
43°
6
61°
45°
7
63°
35°
8
61°
36°
9
62°
35°
10
63°
36°
11
60°
38°
12
63°
36°
13
60°
38°
14
65°
38°
15
70°
42°
16
71°
45°
17
72°
45°
18
72°
48°
19
73°
47°
20
72°
46°
21
70°
46°
22
71°
45°
23
69°
37°
24
63°
34°
25
61°
37°
26
61°
39°
27
59°
38°
28
65°
35°
29
60°
40°
30
63°
38°
1
64°
39°
2
63°
41°
3
68°
36°
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 59° to 75°, with overnight lows between 34° and 50°. The average high for September is 65° with an average low of 41°. 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.
