S
M
T
W
T
F
S
26
87°
59°
27
82°
60°
28
73°
64°
29
82°
64°
30
74°
59°
1
67°
55°
2
71°
46°
3
71°
45°
4
79°
53°
5
79°
61°
6
79°
67°
7
75°
51°
8
73°
50°
9
80°
56°
10
79°
59°
11
80°
55°
12
77°
58°
13
81°
58°
14
83°
60°
15
82°
60°
16
83°
62°
17
80°
64°
18
81°
64°
19
84°
65°
20
78°
65°
21
80°
62°
22
82°
59°
23
79°
58°
24
79°
59°
25
81°
62°
26
81°
60°
27
80°
59°
28
81°
61°
29
82°
65°
30
84°
66°
31
83°
68°
1
84°
68°
2
83°
67°
3
84°
67°
4
84°
66°
5
86°
69°
6
87°
69°
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 71° to 87°, with overnight lows between 45° and 69°. The average high for May is 81° 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 Valley Forge. See also: June | July | August.
