S
M
T
W
T
F
S
30
97°
62°
31
99°
69°
1
100°
72°
2
100°
72°
3
99°
74°
4
101°
74°
5
102°
75°
6
101°
73°
7
93°
67°
8
103°
76°
9
99°
74°
10
99°
72°
11
92°
72°
12
96°
72°
13
98°
70°
14
97°
72°
15
89°
65°
16
86°
66°
17
87°
64°
18
84°
61°
19
82°
61°
20
81°
60°
21
82°
59°
22
87°
64°
23
87°
64°
24
86°
63°
25
87°
65°
26
86°
64°
27
85°
63°
28
85°
64°
29
84°
63°
30
85°
63°
1
81°
55°
2
73°
52°
3
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Patterson
Patterson's September 2026 forecast shows daily high temperatures ranging from 72° to 103°, with overnight lows between 50° and 76°. The average high for September is 87° with an average low of 64°. 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 Patterson. See also: October | November | December.
