S
M
T
W
T
F
S
31
81°
43°
1
86°
52°
2
88°
56°
3
80°
53°
4
87°
54°
5
85°
50°
6
79°
45°
7
78°
46°
8
83°
48°
9
84°
49°
10
90°
51°
11
89°
50°
12
91°
51°
13
90°
50°
14
86°
49°
15
79°
45°
16
88°
53°
17
90°
53°
18
89°
52°
19
90°
52°
20
90°
53°
21
91°
54°
22
92°
54°
23
91°
53°
24
91°
53°
25
92°
54°
26
92°
54°
27
90°
52°
28
85°
49°
29
91°
54°
30
94°
55°
1
94°
55°
2
95°
56°
3
95°
57°
4
94°
57°
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 78° to 95°, with overnight lows between 45° and 57°. The average high for June is 89° with an average low of 52°. 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.
