S
M
T
W
T
F
S
26
73°
51°
27
75°
50°
28
71°
47°
29
71°
44°
30
68°
44°
1
68°
51°
2
69°
46°
3
68°
43°
4
70°
45°
5
74°
49°
6
77°
52°
7
78°
53°
8
78°
54°
9
77°
53°
10
79°
54°
11
80°
55°
12
78°
55°
13
78°
54°
14
75°
52°
15
70°
48°
16
72°
52°
17
75°
54°
18
77°
55°
19
78°
50°
20
72°
48°
21
73°
47°
22
74°
50°
23
75°
57°
24
74°
58°
25
76°
58°
26
78°
57°
27
83°
53°
28
83°
58°
29
82°
61°
30
84°
58°
31
84°
52°
1
80°
53°
2
84°
57°
3
84°
56°
4
83°
61°
5
81°
56°
6
82°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Valley Forge
Valley Forge's May 2026 forecast shows daily high temperatures ranging from 68° to 84°, with overnight lows between 43° and 61°. The average high for May is 76° 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 Valley Forge. See also: June | July | August.
