S
M
T
W
T
F
S
30
79°
70°
31
90°
75°
1
94°
71°
2
94°
73°
3
94°
75°
4
95°
75°
5
91°
72°
6
84°
66°
7
82°
58°
8
90°
70°
9
81°
62°
10
81°
54°
11
84°
65°
12
81°
58°
13
75°
64°
14
77°
59°
15
74°
54°
16
73°
53°
17
74°
55°
18
69°
52°
19
72°
50°
20
70°
52°
21
76°
51°
22
76°
56°
23
78°
57°
24
78°
57°
25
79°
58°
26
78°
57°
27
78°
57°
28
77°
56°
29
77°
57°
30
75°
56°
1
73°
50°
2
64°
45°
3
64°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Blue Grass
Blue Grass's September 2026 forecast shows daily high temperatures ranging from 64° to 90°, with overnight lows between 42° and 70°. The average high for September is 76° with an average low of 56°. 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 Blue Grass. See also: October | November | December.
