S
M
T
W
T
F
S
26
61°
44°
27
73°
42°
28
64°
46°
29
66°
50°
30
66°
50°
1
66°
47°
2
63°
52°
3
62°
47°
4
76°
49°
5
86°
61°
6
72°
59°
7
68°
52°
8
71°
50°
9
68°
54°
10
80°
52°
11
63°
54°
12
70°
47°
13
78°
55°
14
66°
49°
15
70°
52°
16
81°
64°
17
86°
64°
18
88°
67°
19
94°
70°
20
86°
60°
21
73°
56°
22
73°
54°
23
71°
56°
24
75°
58°
25
78°
60°
26
81°
63°
27
83°
58°
28
74°
55°
29
72°
58°
30
73°
62°
31
80°
59°
1
73°
57°
2
74°
57°
3
73°
56°
4
74°
56°
5
75°
63°
6
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Swarthmore
Swarthmore's May 2026 forecast shows daily high temperatures ranging from 66° to 94°, with overnight lows between 49° and 70°. The average high for May is 77° 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 Swarthmore. See also: June | July | August.
