S
M
T
W
T
F
S
30
99°
71°
31
100°
73°
1
98°
75°
2
99°
72°
3
95°
72°
4
95°
71°
5
98°
73°
6
98°
71°
7
96°
66°
8
94°
67°
9
95°
66°
10
85°
63°
11
83°
60°
12
85°
61°
13
87°
59°
14
83°
56°
15
79°
52°
16
82°
57°
17
81°
56°
18
72°
53°
19
76°
55°
20
79°
56°
21
78°
55°
22
78°
55°
23
80°
53°
24
79°
54°
25
76°
53°
26
75°
46°
27
69°
42°
28
68°
41°
29
67°
41°
30
72°
46°
1
73°
50°
2
75°
43°
3
65°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sparta
Sparta's September 2026 forecast shows daily high temperatures ranging from 65° to 99°, with overnight lows between 41° and 73°. The average high for September is 82° with an average low of 57°. 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 Sparta. See also: October | November | December.
