S
M
T
W
T
F
S
28
94°
75°
29
95°
76°
30
95°
76°
1
94°
75°
2
95°
76°
3
95°
76°
4
94°
75°
5
95°
76°
6
96°
76°
7
95°
77°
8
95°
77°
9
96°
76°
10
96°
77°
11
92°
75°
12
93°
76°
13
95°
76°
14
93°
75°
15
90°
76°
16
91°
76°
17
93°
77°
18
95°
77°
19
96°
76°
20
96°
76°
21
95°
75°
22
96°
77°
23
94°
77°
24
92°
76°
25
94°
77°
26
94°
76°
27
96°
72°
28
93°
71°
29
93°
72°
30
95°
75°
31
96°
74°
1
97°
75°
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 90° to 97°, with overnight lows between 71° and 77°. The average high for July is 94° with an average low of 76°. 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.
