S
M
T
W
T
F
S
28
81°
65°
29
94°
75°
30
92°
81°
1
87°
72°
2
86°
72°
3
85°
70°
4
81°
67°
5
83°
66°
6
85°
70°
7
89°
68°
8
88°
69°
9
85°
68°
10
86°
65°
11
85°
69°
12
83°
68°
13
87°
67°
14
91°
71°
15
82°
64°
16
86°
66°
17
80°
63°
18
81°
68°
19
82°
69°
20
85°
68°
21
87°
69°
22
87°
69°
23
86°
68°
24
85°
68°
25
86°
69°
26
84°
69°
27
84°
68°
28
85°
69°
29
84°
69°
30
85°
68°
31
81°
65°
1
80°
61°
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 80° to 91°, with overnight lows between 61° and 72°. The average high for July is 85° with an average low of 68°. 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.
