S
M
T
W
T
F
S
30
97°
72°
31
97°
73°
1
100°
74°
2
102°
73°
3
104°
74°
4
99°
77°
5
93°
72°
6
90°
73°
7
89°
69°
8
90°
68°
9
92°
67°
10
93°
70°
11
93°
69°
12
98°
71°
13
97°
72°
14
95°
72°
15
93°
71°
16
91°
71°
17
90°
70°
18
92°
72°
19
89°
70°
20
90°
65°
21
90°
64°
22
89°
66°
23
89°
66°
24
84°
65°
25
84°
65°
26
85°
64°
27
84°
65°
28
84°
65°
29
86°
64°
30
86°
59°
1
83°
57°
2
81°
56°
3
81°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Guadalupe
Guadalupe's September 2026 forecast shows daily high temperatures ranging from 81° to 98°, with overnight lows between 56° and 72°. The average high for September is 89° with an average low of 66°. 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 Guadalupe. See also: October | November | December.
