S
M
T
W
T
F
S
28
64°
54°
29
63°
54°
30
62°
54°
1
67°
53°
2
70°
55°
3
71°
54°
4
72°
53°
5
78°
51°
6
86°
50°
7
78°
50°
8
74°
52°
9
79°
47°
10
78°
53°
11
74°
49°
12
78°
48°
13
83°
52°
14
87°
50°
15
84°
52°
16
83°
55°
17
85°
54°
18
86°
55°
19
82°
51°
20
84°
53°
21
86°
54°
22
88°
54°
23
81°
55°
24
76°
49°
25
83°
53°
26
83°
54°
27
84°
56°
28
85°
56°
29
84°
51°
30
82°
54°
31
76°
49°
1
77°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Onalaska
Onalaska's July 2026 forecast shows daily high temperatures ranging from 74° to 88°, with overnight lows between 48° and 56°. The average high for July is 82° 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 July weather will actually feel in Onalaska. See also: August | September | October.
