S
M
T
W
T
F
S
26
62°
43°
27
66°
49°
28
63°
45°
29
60°
41°
30
59°
40°
1
57°
39°
2
57°
38°
3
56°
42°
4
59°
41°
5
63°
46°
6
61°
42°
7
63°
39°
8
66°
44°
9
66°
48°
10
71°
48°
11
68°
47°
12
69°
50°
13
72°
49°
14
69°
44°
15
64°
41°
16
65°
45°
17
73°
51°
18
75°
52°
19
74°
41°
20
64°
41°
21
64°
42°
22
65°
42°
23
66°
45°
24
72°
52°
25
76°
54°
26
76°
53°
27
72°
53°
28
68°
52°
29
71°
53°
30
69°
55°
31
75°
55°
1
78°
55°
2
73°
53°
3
73°
53°
4
72°
47°
5
77°
52°
6
80°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seneca
Seneca's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 38° and 55°. The average high for May is 68° with an average low of 47°. 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 Seneca. See also: June | July | August.
