S
M
T
W
T
F
S
31
73°
49°
1
77°
51°
2
79°
49°
3
79°
52°
4
76°
54°
5
77°
48°
6
69°
56°
7
69°
47°
8
80°
45°
9
73°
55°
10
71°
53°
11
80°
45°
12
80°
51°
13
83°
50°
14
86°
54°
15
92°
55°
16
92°
61°
17
84°
60°
18
86°
53°
19
89°
56°
20
87°
62°
21
85°
55°
22
88°
55°
23
92°
61°
24
98°
67°
25
95°
64°
26
74°
55°
27
73°
55°
28
68°
53°
29
75°
54°
30
82°
53°
1
84°
57°
2
85°
59°
3
93°
62°
4
93°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Lewiston
Lewiston's June 2026 forecast shows daily high temperatures ranging from 68° to 98°, with overnight lows between 53° and 67°. The average high for June is 84° with an average low of 58°. 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 Lewiston. See also: July | August | September.
