S
M
T
W
T
F
S
28
59°
53°
29
59°
51°
30
61°
53°
1
63°
51°
2
72°
54°
3
78°
58°
4
78°
54°
5
82°
50°
6
89°
54°
7
82°
55°
8
76°
54°
9
55°
40°
10
43°
35°
11
39°
35°
12
46°
42°
13
50°
47°
14
66°
33°
15
68°
32°
16
66°
33°
17
65°
32°
18
63°
33°
19
68°
32°
20
66°
33°
21
65°
31°
22
60°
33°
23
64°
34°
24
55°
27°
25
63°
32°
26
63°
33°
27
64°
35°
28
65°
35°
29
64°
31°
30
63°
33°
31
55°
26°
1
56°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mount Saint Helens National Volcanic Monument
Mount Saint Helens National Volcanic Monument's July 2026 forecast shows daily high temperatures ranging from 39° to 68°, with overnight lows between 26° and 47°. The average high for July is 60° with an average low of 34°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Mount Saint Helens National Volcanic Monument. See also: August | September | October.
