S
M
T
W
T
F
S
30
72°
48°
31
72°
49°
1
71°
54°
2
70°
56°
3
71°
54°
4
68°
51°
5
69°
47°
6
68°
50°
7
70°
48°
8
69°
49°
9
70°
48°
10
71°
46°
11
73°
51°
12
67°
49°
13
69°
56°
14
74°
56°
15
Hist. Avg.
76°
50°
16
Hist. Avg.
76°
50°
17
Hist. Avg.
76°
49°
18
Hist. Avg.
76°
49°
19
Hist. Avg.
75°
49°
20
Hist. Avg.
75°
49°
21
Hist. Avg.
74°
49°
22
Hist. Avg.
74°
48°
23
Hist. Avg.
74°
48°
24
Hist. Avg.
73°
48°
25
Hist. Avg.
73°
48°
26
Hist. Avg.
73°
48°
27
Hist. Avg.
72°
48°
28
Hist. Avg.
72°
47°
29
Hist. Avg.
71°
47°
30
Hist. Avg.
71°
47°
1
Hist. Avg.
70°
47°
2
Hist. Avg.
70°
46°
3
Hist. Avg.
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Welches
Welches's September 2026 forecast shows daily high temperatures ranging from 67° to 74°, with overnight lows between 46° and 56°. The average high for September is 70° with an average low of 51°. 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 Welches. See also: October | November | December.