S
M
T
W
T
F
S
30
108°
81°
31
101°
81°
1
91°
70°
2
91°
72°
3
91°
72°
4
91°
72°
5
90°
72°
6
91°
72°
7
88°
70°
8
93°
70°
9
91°
71°
10
92°
72°
11
93°
74°
12
89°
71°
13
85°
68°
14
85°
68°
15
84°
67°
16
85°
68°
17
85°
69°
18
84°
70°
19
84°
68°
20
85°
69°
21
84°
71°
22
83°
70°
23
82°
70°
24
80°
69°
25
80°
67°
26
81°
68°
27
79°
69°
28
82°
68°
29
79°
66°
30
78°
66°
1
81°
69°
2
81°
68°
3
78°
69°
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 78° to 93°, with overnight lows between 66° and 74°. The average high for September is 84° with an average low of 69°. 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.
