S
M
T
W
T
F
S
30
101°
71°
31
100°
70°
1
99°
69°
2
101°
70°
3
102°
72°
4
100°
70°
5
99°
70°
6
99°
69°
7
99°
71°
8
100°
70°
9
100°
69°
10
96°
71°
11
93°
68°
12
93°
69°
13
94°
67°
14
84°
65°
15
91°
66°
16
91°
66°
17
90°
65°
18
92°
66°
19
91°
66°
20
91°
65°
21
90°
65°
22
90°
64°
23
89°
64°
24
85°
63°
25
85°
63°
26
83°
61°
27
79°
62°
28
79°
59°
29
80°
60°
30
81°
59°
1
81°
58°
2
82°
58°
3
82°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Roswell
Roswell's September 2026 forecast shows daily high temperatures ranging from 79° to 102°, with overnight lows between 58° and 72°. The average high for September is 91° with an average low of 65°. 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 Roswell. See also: October | November | December.
