S
M
T
W
T
F
S
26
67°
55°
27
67°
52°
28
66°
52°
29
66°
53°
30
67°
52°
1
66°
52°
2
68°
53°
3
67°
54°
4
67°
54°
5
68°
55°
6
68°
55°
7
69°
56°
8
69°
57°
9
70°
56°
10
70°
59°
11
71°
59°
12
70°
57°
13
72°
56°
14
73°
57°
15
75°
59°
16
76°
61°
17
76°
61°
18
75°
57°
19
73°
56°
20
74°
62°
21
75°
62°
22
78°
64°
23
79°
64°
24
79°
63°
25
78°
63°
26
77°
62°
27
79°
63°
28
80°
65°
29
80°
64°
30
79°
64°
31
80°
63°
1
80°
61°
2
81°
64°
3
81°
65°
4
80°
65°
5
81°
64°
6
81°
66°
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 66° to 81°, with overnight lows between 52° and 66°. The average high for May is 74° with an average low of 59°. 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.