S
M
T
W
T
F
S
30
84°
64°
31
89°
71°
1
92°
71°
2
94°
72°
3
92°
69°
4
87°
69°
5
82°
63°
6
81°
62°
7
80°
61°
8
78°
56°
9
79°
58°
10
83°
59°
11
79°
55°
12
76°
56°
13
78°
54°
14
77°
55°
15
81°
60°
16
80°
60°
17
80°
59°
18
77°
57°
19
80°
59°
20
80°
60°
21
81°
59°
22
80°
59°
23
81°
58°
24
80°
59°
25
80°
57°
26
78°
56°
27
79°
57°
28
78°
57°
29
79°
56°
30
77°
55°
1
76°
54°
2
76°
54°
3
75°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Hilliard
Hilliard's September 2026 forecast shows daily high temperatures ranging from 75° to 94°, with overnight lows between 54° and 72°. The average high for September is 80° with an average low of 59°. 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 Hilliard. See also: October | November | December.