S
M
T
W
T
F
S
31
71°
39°
1
82°
51°
2
88°
50°
3
72°
49°
4
68°
44°
5
66°
49°
6
65°
43°
7
67°
41°
8
60°
47°
9
66°
48°
10
67°
48°
11
77°
44°
12
79°
52°
13
88°
59°
14
93°
54°
15
95°
58°
16
80°
53°
17
77°
46°
18
84°
53°
19
86°
57°
20
74°
52°
21
81°
48°
22
91°
51°
23
94°
57°
24
91°
56°
25
69°
49°
26
75°
55°
27
63°
54°
28
66°
54°
29
64°
53°
30
66°
52°
1
65°
51°
2
65°
52°
3
71°
53°
4
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in St. Helens
St. Helens's June 2026 forecast shows daily high temperatures ranging from 63° to 75°, with overnight lows between 51° and 54°. The average high for June is 67° 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 June weather will actually feel in St. Helens. See also: July | August | September.
