S
M
T
W
T
F
S
27
N/A
28
N/A
29
76°
47°
30
65°
59°
1
65°
56°
2
64°
42°
3
67°
41°
4
69°
49°
5
66°
44°
6
74°
49°
7
75°
54°
8
69°
46°
9
68°
55°
10
78°
52°
11
73°
56°
12
77°
56°
13
60°
47°
14
57°
51°
15
66°
45°
16
58°
40°
17
53°
39°
18
55°
40°
19
57°
41°
20
55°
42°
21
59°
43°
22
58°
38°
23
51°
38°
24
57°
43°
25
61°
43°
26
57°
39°
27
59°
34°
28
48°
31°
29
49°
40°
30
53°
38°
31
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Waukesha
Waukesha's October 2026 forecast shows daily high temperatures ranging from 48° to 78°, with overnight lows between 31° and 56°. The average high for October is 59° with an average low of 43°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Waukesha. See also: November | December | January.