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 83. South 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
- May 25 to May 28, 2026
- Latest sync
- May 22, 2026 1:41 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukesha County
Memorial Day looks like the warmest upcoming period in Waukesha County at 83 degrees F.
Monday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Tuesday at about 0 to 10 mph S.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 22, 2026 1:41 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 55.
Sunny, with a high near 83.
A slight chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 56. Chance of precipitation is 20%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 81. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Sunny
|
83°F |
0 to 5 mph
S
|
|
Monday Night
May 25
|
Mostly Clear
|
55°F |
0 to 5 mph
S
|
|
Tuesday
May 26
|
Sunny
|
83°F |
0 to 10 mph
S
|
|
Tuesday Night
May 26
|
Slight Chance Showers And Thunderstorms
|
56°F |
0 to 5 mph
SE
|
|
Wednesday
May 27
|
Chance Rain Showers
|
81°F |
5 to 10 mph
E
|
|
Wednesday Night
May 27
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
57°F |
5 to 10 mph
E
|
|
Thursday
May 28
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
81°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.
