S
M
T
W
T
F
S
30
101°
64°
31
101°
65°
1
100°
64°
2
99°
65°
3
99°
64°
4
98°
63°
5
99°
56°
6
97°
54°
7
91°
56°
8
91°
57°
9
94°
60°
10
97°
61°
11
97°
57°
12
96°
58°
13
96°
59°
14
95°
56°
15
95°
56°
16
92°
55°
17
92°
60°
18
95°
58°
19
96°
58°
20
95°
56°
21
93°
57°
22
87°
58°
23
85°
53°
24
88°
56°
25
88°
51°
26
89°
50°
27
86°
50°
28
86°
49°
29
87°
48°
30
84°
52°
1
84°
58°
2
91°
57°
3
92°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Lost Hills
Lost Hills's September 2026 forecast shows daily high temperatures ranging from 84° to 101°, with overnight lows between 48° and 65°. The average high for September is 93° with an average low of 57°. 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 Lost Hills. See also: October | November | December.