S
M
T
W
T
F
S
26
56°
36°
27
43°
37°
28
49°
32°
29
41°
28°
30
44°
26°
1
54°
20°
2
64°
22°
3
66°
31°
4
59°
31°
5
37°
28°
6
38°
27°
7
51°
23°
8
60°
24°
9
49°
37°
10
46°
28°
11
60°
22°
12
59°
34°
13
67°
28°
14
76°
33°
15
78°
42°
16
59°
33°
17
55°
43°
18
51°
35°
19
45°
31°
20
54°
36°
21
60°
40°
22
67°
48°
23
69°
47°
24
68°
49°
25
66°
50°
26
70°
51°
27
72°
53°
28
68°
44°
29
61°
46°
30
62°
43°
31
62°
43°
1
63°
41°
2
63°
48°
3
64°
52°
4
72°
53°
5
74°
53°
6
74°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Big Falls
Big Falls's May 2026 forecast shows daily high temperatures ranging from 45° to 78°, with overnight lows between 31° and 53°. The average high for May is 64° with an average low of 45°. 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 Big Falls. See also: June | July | August.
