S
M
T
W
T
F
S
30
73°
49°
31
73°
49°
1
74°
53°
2
74°
58°
3
75°
58°
4
82°
59°
5
82°
56°
6
79°
49°
7
75°
48°
8
74°
48°
9
73°
47°
10
72°
47°
11
72°
48°
12
71°
47°
13
75°
53°
14
78°
54°
15
75°
53°
16
70°
50°
17
71°
51°
18
70°
52°
19
73°
44°
20
71°
46°
21
71°
44°
22
74°
42°
23
68°
42°
24
67°
43°
25
67°
48°
26
68°
42°
27
67°
47°
28
67°
47°
29
65°
40°
30
65°
41°
1
66°
47°
2
71°
42°
3
68°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Morgan Hill
Morgan Hill's September 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 40° and 59°. The average high for September is 72° with an average low of 48°. 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 Morgan Hill. See also: October | November | December.
