S
M
T
W
T
F
S
30
78°
66°
31
N/A
1
82°
68°
2
77°
71°
3
83°
71°
4
85°
66°
5
79°
63°
6
75°
62°
7
76°
65°
8
76°
62°
9
79°
65°
10
80°
63°
11
80°
63°
12
74°
59°
13
74°
59°
14
78°
61°
15
72°
61°
16
72°
65°
17
74°
58°
18
70°
57°
19
70°
56°
20
71°
59°
21
75°
64°
22
78°
65°
23
79°
64°
24
78°
62°
25
76°
59°
26
76°
61°
27
77°
62°
28
76°
62°
29
77°
59°
30
69°
54°
1
66°
53°
2
69°
58°
3
74°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hollis
Hollis's September 2026 forecast shows daily high temperatures ranging from 66° to 85°, with overnight lows between 53° and 71°. The average high for September is 76° with an average low of 62°. 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 Hollis. See also: October | November | December.