S
M
T
W
T
F
S
28
67°
56°
29
69°
55°
30
69°
54°
1
78°
54°
2
82°
51°
3
89°
54°
4
92°
59°
5
89°
55°
6
86°
56°
7
97°
58°
8
92°
67°
9
92°
59°
10
94°
56°
11
93°
62°
12
83°
69°
13
98°
61°
14
86°
69°
15
99°
65°
16
102°
68°
17
94°
67°
18
93°
65°
19
93°
59°
20
78°
65°
21
98°
64°
22
101°
71°
23
102°
72°
24
99°
70°
25
94°
66°
26
89°
63°
27
93°
60°
28
90°
61°
29
90°
63°
30
93°
64°
31
100°
60°
1
93°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Lewiston
Lewiston's July 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for July is ° with an average low of °. 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 Lewiston. See also: August | September | October.
