S
M
T
W
T
F
S
30
103°
77°
31
102°
75°
1
100°
75°
2
91°
75°
3
97°
77°
4
100°
73°
5
99°
75°
6
98°
73°
7
102°
75°
8
101°
76°
9
99°
75°
10
98°
75°
11
99°
75°
12
102°
77°
13
102°
75°
14
101°
75°
15
100°
76°
16
97°
76°
17
99°
74°
18
100°
71°
19
100°
73°
20
99°
74°
21
98°
74°
22
98°
74°
23
97°
73°
24
96°
71°
25
95°
70°
26
96°
71°
27
95°
72°
28
93°
71°
29
86°
62°
30
91°
68°
1
90°
68°
2
85°
67°
3
87°
66°
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 85° to 100°, with overnight lows between 62° and 76°. The average high for September is 95° with an average low of 71°. 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.
