S
M
T
W
T
F
S
26
59°
35°
27
71°
35°
28
63°
51°
29
59°
46°
30
51°
37°
1
50°
35°
2
48°
35°
3
57°
33°
4
74°
48°
5
75°
45°
6
49°
39°
7
52°
40°
8
55°
42°
9
57°
50°
10
57°
41°
11
54°
37°
12
52°
42°
13
55°
46°
14
61°
48°
15
60°
47°
16
60°
48°
17
61°
48°
18
59°
47°
19
63°
48°
20
69°
52°
21
68°
52°
22
68°
46°
23
62°
44°
24
61°
45°
25
61°
46°
26
63°
45°
27
64°
45°
28
63°
46°
29
63°
46°
30
64°
47°
31
66°
51°
1
65°
49°
2
66°
48°
3
67°
56°
4
68°
53°
5
67°
52°
6
73°
58°
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 49° to 75°, with overnight lows between 37° and 58°. The average high for May is 62° 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.
