S
M
T
W
T
F
S
30
85°
56°
31
86°
59°
1
88°
62°
2
89°
65°
3
88°
60°
4
88°
62°
5
87°
64°
6
88°
61°
7
89°
65°
8
87°
62°
9
87°
61°
10
86°
61°
11
85°
60°
12
84°
61°
13
82°
60°
14
81°
60°
15
83°
59°
16
76°
59°
17
78°
58°
18
79°
53°
19
78°
53°
20
76°
56°
21
76°
55°
22
75°
53°
23
73°
56°
24
71°
57°
25
78°
58°
26
74°
57°
27
77°
55°
28
73°
55°
29
70°
52°
30
73°
44°
1
70°
42°
2
67°
41°
3
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lawson
Lawson's September 2026 forecast shows daily high temperatures ranging from 66° to 89°, with overnight lows between 41° and 65°. The average high for September is 80° with an average low of 57°. 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 Lawson. See also: October | November | December.