S
M
T
W
T
F
S
26
72°
49°
27
70°
48°
28
71°
49°
29
69°
49°
30
63°
48°
1
65°
50°
2
68°
48°
3
67°
47°
4
71°
51°
5
73°
52°
6
73°
54°
7
72°
54°
8
74°
53°
9
74°
53°
10
65°
51°
11
65°
54°
12
72°
55°
13
75°
54°
14
75°
55°
15
74°
55°
16
76°
56°
17
77°
56°
18
77°
52°
19
71°
52°
20
73°
54°
21
72°
53°
22
71°
57°
23
72°
59°
24
75°
59°
25
76°
61°
26
80°
61°
27
82°
62°
28
82°
61°
29
81°
58°
30
82°
52°
31
75°
57°
1
78°
58°
2
80°
62°
3
83°
61°
4
84°
54°
5
85°
53°
6
76°
53°
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 85°, with overnight lows between 47° and 62°. The average high for May is 74° with an average low of 54°. 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.
