S
M
T
W
T
F
S
26
63°
38°
27
69°
41°
28
67°
49°
29
51°
41°
30
53°
33°
1
51°
33°
2
49°
33°
3
62°
33°
4
70°
44°
5
60°
47°
6
53°
40°
7
56°
34°
8
61°
38°
9
61°
44°
10
57°
35°
11
55°
34°
12
59°
30°
13
58°
42°
14
59°
40°
15
64°
37°
16
70°
43°
17
81°
49°
18
85°
64°
19
81°
56°
20
56°
42°
21
64°
39°
22
63°
46°
23
52°
50°
24
68°
54°
25
76°
54°
26
82°
56°
27
80°
52°
28
74°
45°
29
60°
48°
30
67°
49°
31
68°
51°
1
72°
54°
2
71°
54°
3
70°
53°
4
71°
55°
5
72°
61°
6
69°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Granton
Granton's May 2026 forecast shows daily high temperatures ranging from 52° to 82°, with overnight lows between 45° and 61°. The average high for May is 70° with an average low of 53°. 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 Granton. See also: June | July | August.