Waukesha County, WI Weather Forecast
County weather hub
Sunny
Compare major city weather across Waukesha County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 66. Southwest wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Waukesha County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 9 of 9 mapped cities in Waukesha County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 9 to Oct 12, 2026
- Latest sync
- Oct 6, 2026 8:21 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukesha County
Sunday looks like the warmest upcoming period in Waukesha County at 77 degrees F.
Friday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph S.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 6, 2026 8:21 AM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 50. South wind around 5 mph.
Sunny, with a high near 74.
Mostly clear, with a low around 58.
Mostly sunny, with a high near 77.
Partly cloudy, with a low around 54.
A chance of rain showers after 1pm. Mostly sunny, with a high near 68. Chance of precipitation is 30%.
A chance of rain showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 9
|
Sunny
|
66°F |
0 to 5 mph
SW
|
|
Friday Night
Oct 9
|
Mostly Clear
|
50°F |
5 mph
S
|
|
Saturday
Oct 10
|
Sunny
|
74°F |
5 to 15 mph
S
|
|
Saturday Night
Oct 10
|
Mostly Clear
|
58°F |
10 to 15 mph
S
|
|
Sunday
Oct 11
|
Mostly Sunny
|
77°F |
10 to 15 mph
SW
|
|
Sunday Night
Oct 11
|
Partly Cloudy
|
54°F |
5 to 10 mph
S
|
|
Columbus Day
Oct 12
|
Mostly Sunny then Chance Rain Showers
|
68°F |
5 to 10 mph
N
|
|
Monday Night
Oct 12
|
Chance Rain Showers
|
50°F |
5 to 10 mph
E
|
Major City Forecasts
Live forecast snapshots for major cities across Waukesha County.
Coverage
Forecast coverage currently spans 9 of 9 mapped cities in Waukesha County.
Largest mapped city population in this region: 39,812.
