S
M
T
W
T
F
S
26
59°
41°
27
70°
36°
28
61°
38°
29
63°
48°
30
64°
48°
1
64°
38°
2
60°
45°
3
61°
41°
4
73°
37°
5
82°
51°
6
69°
52°
7
65°
50°
8
66°
48°
9
62°
48°
10
77°
50°
11
62°
38°
12
64°
45°
13
57°
50°
14
61°
49°
15
65°
48°
16
71°
52°
17
73°
51°
18
73°
54°
19
77°
57°
20
76°
58°
21
76°
51°
22
65°
48°
23
66°
49°
24
67°
48°
25
69°
52°
26
73°
55°
27
70°
52°
28
72°
52°
29
70°
49°
30
74°
56°
31
78°
58°
1
74°
58°
2
78°
56°
3
77°
59°
4
79°
60°
5
79°
59°
6
78°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Pottstown
Pottstown's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 38° and 60°. The average high for May is 71° with an average low of 52°. 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 Pottstown. See also: June | July | August.