S
M
T
W
T
F
S
31
71°
39°
1
82°
51°
2
88°
56°
3
69°
51°
4
69°
48°
5
67°
48°
6
63°
46°
7
70°
46°
8
71°
50°
9
70°
52°
10
76°
53°
11
74°
51°
12
82°
55°
13
84°
55°
14
81°
54°
15
71°
49°
16
67°
49°
17
76°
55°
18
74°
52°
19
67°
48°
20
73°
50°
21
76°
55°
22
78°
55°
23
76°
49°
24
68°
49°
25
72°
50°
26
76°
49°
27
69°
48°
28
68°
50°
29
70°
49°
30
77°
51°
1
72°
49°
2
78°
55°
3
81°
58°
4
81°
58°
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 88°, with overnight lows between 46° and 58°. The average high for June is 74° with an average low of 51°. 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.
