S
M
T
W
T
F
S
26
39°
28°
27
50°
29°
28
57°
38°
29
59°
33°
30
64°
32°
1
72°
32°
2
69°
39°
3
76°
43°
4
59°
39°
5
50°
32°
6
74°
27°
7
65°
47°
8
74°
41°
9
70°
48°
10
79°
42°
11
77°
46°
12
80°
42°
13
84°
48°
14
64°
48°
15
63°
45°
16
52°
39°
17
45°
33°
18
54°
38°
19
64°
42°
20
58°
38°
21
58°
39°
22
67°
46°
23
78°
46°
24
76°
48°
25
75°
47°
26
74°
46°
27
73°
44°
28
71°
45°
29
73°
44°
30
68°
45°
31
71°
44°
1
67°
45°
2
68°
43°
3
74°
49°
4
75°
49°
5
73°
48°
6
66°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Holter Lake Campground
Holter Lake Campground's May 2026 forecast shows daily high temperatures ranging from 54° to 78°, with overnight lows between 38° and 49°. The average high for May is 69° 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 Holter Lake Campground. See also: June | July | August.