S
M
T
W
T
F
S
30
77°
62°
31
82°
68°
1
83°
69°
2
81°
67°
3
77°
64°
4
76°
60°
5
75°
60°
6
75°
59°
7
77°
66°
8
82°
59°
9
74°
58°
10
75°
59°
11
76°
55°
12
72°
57°
13
72°
57°
14
71°
56°
15
73°
57°
16
74°
58°
17
73°
56°
18
75°
56°
19
72°
55°
20
72°
54°
21
70°
54°
22
71°
55°
23
72°
58°
24
76°
54°
25
77°
58°
26
76°
60°
27
70°
57°
28
69°
55°
29
75°
53°
30
73°
51°
1
68°
54°
2
72°
60°
3
74°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jericho
Jericho's September 2026 forecast shows daily high temperatures ranging from 68° to 83°, with overnight lows between 49° and 69°. The average high for September is 74° with an average low of 58°. 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 Jericho. See also: October | November | December.