S
M
T
W
T
F
S
30
87°
46°
31
75°
50°
1
80°
49°
2
79°
45°
3
77°
46°
4
83°
49°
5
82°
46°
6
77°
44°
7
78°
44°
8
77°
43°
9
74°
43°
10
73°
45°
11
72°
46°
12
75°
50°
13
80°
51°
14
79°
48°
15
78°
50°
16
81°
49°
17
80°
42°
18
72°
41°
19
70°
40°
20
75°
46°
21
78°
43°
22
76°
44°
23
75°
50°
24
77°
47°
25
70°
42°
26
68°
47°
27
69°
42°
28
65°
37°
29
63°
44°
30
65°
49°
1
66°
50°
2
68°
37°
3
69°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hillcrest
Hillcrest's September 2026 forecast shows daily high temperatures ranging from 63° to 87°, with overnight lows between 35° and 51°. The average high for September is 75° with an average low of 45°. 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 Hillcrest. See also: October | November | December.