S
M
T
W
T
F
S
30
85°
68°
31
92°
65°
1
95°
70°
2
97°
71°
3
98°
71°
4
98°
73°
5
96°
69°
6
81°
68°
7
84°
64°
8
85°
59°
9
86°
65°
10
90°
70°
11
88°
68°
12
81°
69°
13
87°
67°
14
87°
66°
15
89°
67°
16
87°
63°
17
83°
62°
18
82°
58°
19
81°
59°
20
78°
56°
21
79°
58°
22
84°
62°
23
82°
61°
24
80°
61°
25
82°
60°
26
84°
62°
27
84°
61°
28
83°
61°
29
83°
60°
30
82°
60°
1
82°
59°
2
81°
59°
3
81°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Welcome
Welcome's September 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 56° and 70°. The average high for September is 84° with an average low of 62°. 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 Welcome. See also: October | November | December.
