S
M
T
W
T
F
S
30
98°
74°
31
98°
75°
1
97°
76°
2
96°
75°
3
94°
74°
4
95°
75°
5
94°
75°
6
93°
76°
7
96°
76°
8
97°
75°
9
97°
76°
10
95°
76°
11
95°
75°
12
96°
75°
13
96°
74°
14
95°
73°
15
94°
73°
16
90°
72°
17
90°
72°
18
91°
74°
19
91°
73°
20
92°
74°
21
91°
75°
22
92°
74°
23
93°
69°
24
94°
68°
25
89°
67°
26
92°
72°
27
91°
71°
28
92°
72°
29
93°
73°
30
Hist. Avg.
90°
69°
1
Hist. Avg.
90°
69°
2
Hist. Avg.
89°
68°
3
Hist. Avg.
89°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Zapata
Zapata's September 2026 forecast shows daily high temperatures ranging from 89° to 98°, with overnight lows between 67° and 76°. The average high for September is 94° with an average low of 74°. 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 Zapata. See also: October | November | December.