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
67°
54°
15
68°
53°
16
83°
63°
17
89°
65°
18
93°
67°
19
94°
71°
20
92°
58°
21
65°
51°
22
62°
51°
23
74°
56°
24
75°
58°
25
77°
60°
26
76°
61°
27
77°
59°
28
79°
61°
29
78°
58°
30
81°
62°
31
80°
63°
1
80°
62°
2
76°
61°
3
73°
63°
4
75°
63°
5
79°
61°
6
78°
63°
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 62° to 94°, with overnight lows between 51° and 71°. The average high for May is 79° with an average low of 61°. 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.
