S
M
T
W
T
F
S
26
59°
44°
27
61°
46°
28
69°
43°
29
76°
47°
30
81°
50°
1
82°
54°
2
74°
51°
3
66°
47°
4
60°
47°
5
65°
47°
6
74°
52°
7
81°
52°
8
82°
50°
9
87°
57°
10
88°
56°
11
89°
60°
12
85°
56°
13
77°
46°
14
84°
52°
15
84°
52°
16
76°
49°
17
67°
46°
18
77°
54°
19
82°
54°
20
87°
57°
21
88°
58°
22
88°
60°
23
79°
48°
24
80°
46°
25
72°
47°
26
54°
43°
27
56°
47°
28
60°
47°
29
63°
46°
30
68°
45°
31
81°
47°
1
84°
49°
2
82°
48°
3
81°
47°
4
81°
51°
5
76°
48°
6
76°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Loch Lomond
Loch Lomond's May 2026 forecast shows daily high temperatures ranging from 54° to 84°, with overnight lows between 43° and 51°. The average high for May is 72° 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 Loch Lomond. See also: June | July | August.
