S
M
T
W
T
F
S
30
92°
51°
31
82°
53°
1
72°
57°
2
74°
56°
3
68°
55°
4
74°
48°
5
80°
47°
6
80°
45°
7
90°
48°
8
96°
50°
9
98°
55°
10
100°
62°
11
94°
52°
12
83°
54°
13
77°
52°
14
89°
48°
15
91°
51°
16
78°
48°
17
81°
49°
18
91°
49°
19
93°
49°
20
89°
52°
21
93°
53°
22
85°
52°
23
90°
54°
24
92°
53°
25
86°
54°
26
87°
54°
27
85°
55°
28
85°
53°
29
81°
54°
30
82°
49°
1
85°
53°
2
80°
53°
3
85°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hopland
Hopland's September 2026 forecast shows daily high temperatures ranging from 80° to 93°, with overnight lows between 49° and 55°. The average high for September is 86° with an average low of 52°. 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 Hopland. See also: October | November | December.