S
M
T
W
T
F
S
26
37°
32°
27
45°
32°
28
50°
36°
29
60°
41°
30
65°
47°
1
67°
49°
2
63°
51°
3
58°
43°
4
43°
37°
5
46°
37°
6
65°
41°
7
67°
53°
8
69°
52°
9
73°
56°
10
73°
56°
11
77°
58°
12
74°
56°
13
64°
51°
14
68°
52°
15
66°
51°
16
60°
48°
17
51°
44°
18
61°
39°
19
65°
46°
20
68°
52°
21
70°
56°
22
71°
56°
23
69°
55°
24
83°
49°
25
78°
44°
26
67°
39°
27
63°
41°
28
70°
46°
29
74°
47°
30
81°
43°
31
80°
45°
1
86°
49°
2
87°
48°
3
86°
52°
4
88°
51°
5
87°
49°
6
76°
43°
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 63° to 88°, with overnight lows between 39° and 52°. The average high for May is 79° with an average low of 46°. 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.
