S
M
T
W
T
F
S
26
64°
48°
27
64°
46°
28
62°
49°
29
58°
42°
30
56°
34°
1
51°
33°
2
51°
29°
3
60°
38°
4
77°
49°
5
57°
45°
6
57°
41°
7
57°
35°
8
61°
42°
9
71°
48°
10
63°
40°
11
65°
38°
12
42°
36°
13
60°
38°
14
65°
37°
15
67°
38°
16
81°
56°
17
86°
61°
18
84°
65°
19
81°
62°
20
68°
51°
21
67°
48°
22
73°
49°
23
65°
56°
24
75°
52°
25
81°
58°
26
81°
62°
27
76°
59°
28
81°
57°
29
78°
53°
30
71°
49°
31
69°
54°
1
74°
56°
2
75°
55°
3
74°
58°
4
77°
59°
5
76°
57°
6
75°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Syracuse
Syracuse's May 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 49° and 62°. The average high for May is 75° 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 May weather will actually feel in Syracuse. See also: June | July | August.