S
M
T
W
T
F
S
26
60°
43°
27
73°
41°
28
70°
50°
29
64°
47°
30
51°
42°
1
55°
34°
2
47°
34°
3
58°
34°
4
72°
48°
5
75°
59°
6
60°
46°
7
60°
41°
8
61°
41°
9
66°
48°
10
64°
47°
11
63°
42°
12
69°
41°
13
67°
47°
14
53°
43°
15
66°
47°
16
81°
62°
17
79°
63°
18
91°
67°
19
82°
67°
20
79°
60°
21
69°
53°
22
67°
52°
23
70°
54°
24
78°
59°
25
77°
62°
26
78°
60°
27
79°
54°
28
76°
60°
29
75°
60°
30
76°
58°
31
70°
55°
1
70°
52°
2
71°
51°
3
70°
51°
4
71°
52°
5
77°
61°
6
81°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Chalfant
Chalfant's May 2026 forecast shows daily high temperatures ranging from 53° to 91°, with overnight lows between 43° and 67°. The average high for May is 74° with an average low of 57°. 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 Chalfant. See also: June | July | August.