S
M
T
W
T
F
S
30
94°
73°
31
93°
73°
1
98°
70°
2
98°
72°
3
96°
74°
4
97°
73°
5
97°
71°
6
94°
70°
7
92°
75°
8
98°
71°
9
85°
59°
10
84°
63°
11
88°
64°
12
85°
60°
13
80°
59°
14
77°
54°
15
75°
53°
16
76°
54°
17
82°
58°
18
77°
57°
19
74°
54°
20
78°
51°
21
83°
57°
22
82°
57°
23
81°
58°
24
79°
57°
25
74°
57°
26
74°
56°
27
80°
56°
28
77°
55°
29
75°
55°
30
77°
49°
1
67°
45°
2
66°
41°
3
65°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Syracuse
Syracuse's September 2026 forecast shows daily high temperatures ranging from 65° to 98°, with overnight lows between 40° and 75°. The average high for September is 79° 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 Syracuse. See also: October | November | December.
