S
M
T
W
T
F
S
30
86°
62°
31
88°
66°
1
89°
65°
2
87°
66°
3
88°
65°
4
87°
61°
5
86°
63°
6
87°
65°
7
88°
62°
8
84°
64°
9
87°
63°
10
87°
63°
11
86°
62°
12
86°
64°
13
85°
60°
14
83°
57°
15
81°
57°
16
83°
58°
17
84°
61°
18
85°
61°
19
84°
60°
20
83°
61°
21
79°
61°
22
84°
60°
23
84°
60°
24
83°
54°
25
78°
53°
26
76°
53°
27
Hist. Avg.
80°
57°
28
Hist. Avg.
80°
56°
29
Hist. Avg.
80°
56°
30
Hist. Avg.
80°
55°
1
Hist. Avg.
79°
55°
2
Hist. Avg.
79°
55°
3
Hist. Avg.
78°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Longview
Longview's September 2026 forecast shows daily high temperatures ranging from 76° to 89°, with overnight lows between 53° and 66°. The average high for September is 85° with an average low of 61°. 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.
