S
M
T
W
T
F
S
26
64°
47°
27
76°
42°
28
74°
54°
29
60°
46°
30
55°
37°
1
53°
33°
2
49°
33°
3
61°
47°
4
72°
60°
5
75°
50°
6
59°
44°
7
55°
37°
8
60°
42°
9
64°
47°
10
65°
50°
11
63°
44°
12
67°
49°
13
65°
50°
14
68°
50°
15
67°
49°
16
68°
62°
17
77°
57°
18
77°
56°
19
73°
56°
20
78°
54°
21
75°
53°
22
70°
48°
23
67°
47°
24
69°
50°
25
69°
51°
26
70°
50°
27
69°
49°
28
70°
50°
29
70°
50°
30
71°
51°
31
76°
59°
1
72°
55°
2
73°
52°
3
74°
59°
4
75°
59°
5
78°
60°
6
82°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Duncan Falls
Duncan Falls's May 2026 forecast shows daily high temperatures ranging from 55° to 82°, with overnight lows between 37° and 62°. The average high for May is 70° 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 Duncan Falls. See also: June | July | August.