S
M
T
W
T
F
S
26
52°
42°
27
52°
43°
28
55°
34°
29
59°
33°
30
56°
34°
1
56°
33°
2
70°
44°
3
71°
55°
4
66°
33°
5
52°
35°
6
53°
35°
7
60°
35°
8
69°
41°
9
68°
42°
10
67°
43°
11
69°
44°
12
76°
50°
13
71°
48°
14
68°
46°
15
71°
44°
16
74°
51°
17
75°
50°
18
71°
51°
19
72°
51°
20
70°
45°
21
66°
43°
22
66°
42°
23
67°
43°
24
68°
43°
25
67°
44°
26
67°
44°
27
68°
45°
28
69°
46°
29
72°
53°
30
71°
48°
31
70°
49°
1
76°
55°
2
79°
56°
3
80°
57°
4
81°
58°
5
81°
59°
6
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Granite Falls
Granite Falls's May 2026 forecast shows daily high temperatures ranging from 52° to 81°, with overnight lows between 33° and 59°. The average high for May is 70° with an average low of 47°. 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 Granite Falls. See also: June | July | August.
