S
M
T
W
T
F
S
30
81°
50°
31
73°
49°
1
72°
48°
2
72°
53°
3
74°
55°
4
74°
48°
5
72°
47°
6
71°
52°
7
73°
50°
8
72°
53°
9
76°
53°
10
77°
54°
11
76°
52°
12
70°
51°
13
69°
53°
14
75°
52°
15
Hist. Avg.
70°
51°
16
Hist. Avg.
69°
50°
17
Hist. Avg.
69°
50°
18
Hist. Avg.
69°
50°
19
Hist. Avg.
69°
49°
20
Hist. Avg.
68°
49°
21
Hist. Avg.
68°
49°
22
Hist. Avg.
68°
48°
23
Hist. Avg.
67°
48°
24
Hist. Avg.
67°
48°
25
Hist. Avg.
67°
47°
26
Hist. Avg.
66°
47°
27
Hist. Avg.
66°
47°
28
Hist. Avg.
66°
46°
29
Hist. Avg.
65°
46°
30
Hist. Avg.
65°
46°
1
Hist. Avg.
65°
45°
2
Hist. Avg.
64°
45°
3
Hist. Avg.
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Lopez
Lopez's September 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 47° and 55°. The average high for September is 74° 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 Lopez. See also: October | November | December.