S
M
T
W
T
F
S
30
93°
71°
31
N/A
1
97°
72°
2
97°
74°
3
94°
73°
4
90°
74°
5
95°
69°
6
92°
70°
7
92°
69°
8
91°
67°
9
88°
64°
10
92°
65°
11
86°
63°
12
87°
67°
13
89°
66°
14
84°
67°
15
82°
66°
16
80°
66°
17
82°
65°
18
84°
65°
19
84°
64°
20
80°
64°
21
80°
63°
22
82°
63°
23
83°
62°
24
84°
63°
25
85°
63°
26
85°
62°
27
84°
63°
28
84°
62°
29
83°
61°
30
84°
61°
1
83°
60°
2
82°
60°
3
82°
59°
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 80° to 97°, with overnight lows between 59° and 74°. The average high for September is 86° with an average low of 65°. 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.