S
M
T
W
T
F
S
30
89°
56°
31
91°
59°
1
93°
59°
2
94°
58°
3
94°
59°
4
93°
58°
5
93°
58°
6
92°
57°
7
88°
57°
8
89°
54°
9
87°
54°
10
86°
55°
11
85°
56°
12
86°
58°
13
87°
57°
14
86°
54°
15
85°
51°
16
85°
49°
17
Hist. Avg.
87°
50°
18
Hist. Avg.
87°
50°
19
Hist. Avg.
87°
50°
20
Hist. Avg.
86°
50°
21
Hist. Avg.
86°
49°
22
Hist. Avg.
85°
49°
23
Hist. Avg.
85°
49°
24
Hist. Avg.
85°
48°
25
Hist. Avg.
84°
48°
26
Hist. Avg.
84°
48°
27
Hist. Avg.
84°
48°
28
Hist. Avg.
83°
47°
29
Hist. Avg.
83°
47°
30
Hist. Avg.
82°
47°
1
Hist. Avg.
82°
46°
2
Hist. Avg.
82°
46°
3
Hist. Avg.
81°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Potrero
Potrero's September 2026 forecast shows daily high temperatures ranging from 85° to 94°, with overnight lows between 49° and 59°. The average high for September is 89° with an average low of 56°. 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 Potrero. See also: October | November | December.
