S
M
T
W
T
F
S
30
77°
50°
31
73°
56°
1
74°
58°
2
77°
54°
3
79°
50°
4
81°
59°
5
83°
60°
6
82°
53°
7
90°
51°
8
96°
67°
9
109°
67°
10
96°
57°
11
85°
56°
12
82°
51°
13
81°
52°
14
82°
55°
15
81°
54°
16
78°
53°
17
81°
52°
18
80°
53°
19
82°
55°
20
82°
54°
21
80°
52°
22
76°
53°
23
79°
54°
24
82°
54°
25
82°
55°
26
78°
55°
27
82°
54°
28
83°
56°
29
83°
56°
30
82°
55°
1
83°
55°
2
82°
54°
3
83°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hollister
Hollister's September 2026 forecast shows daily high temperatures ranging from 76° to 109°, with overnight lows between 51° and 67°. The average high for September is 83° with an average low of 55°. 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 Hollister. See also: October | November | December.
