S
M
T
W
T
F
S
30
95°
56°
31
92°
59°
1
91°
48°
2
89°
41°
3
85°
47°
4
85°
48°
5
92°
39°
6
85°
67°
7
95°
67°
8
100°
42°
9
99°
66°
10
100°
65°
11
98°
61°
12
97°
59°
13
91°
55°
14
90°
49°
15
88°
48°
16
84°
45°
17
83°
50°
18
84°
47°
19
86°
38°
20
89°
44°
21
84°
53°
22
84°
48°
23
93°
47°
24
93°
47°
25
92°
54°
26
95°
51°
27
80°
63°
28
81°
51°
29
82°
58°
30
86°
59°
1
86°
52°
2
92°
59°
3
91°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Jacumba
Jacumba's September 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 51° and 63°. The average high for September is 85° 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 Jacumba. See also: October | November | December.
