Waukesha County, WI Weather Forecast
County weather hub
Rain Showers Likely then Partly Sunny
Compare major city weather across Waukesha County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers likely before 9am. Partly sunny, with a high near 49. North wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
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
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:25 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukesha County
Monday looks like the warmest upcoming period in Waukesha County at 77 degrees F.
Friday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Sunday at about 10 to 20 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:25 PM CDT
- Coverage
- 6 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 31. East wind 0 to 5 mph.
Mostly sunny, with a high near 53. Southeast wind 5 to 10 mph.
Showers and thunderstorms likely after 7pm. Mostly cloudy. Low around 43, with temperatures rising to around 52 overnight. Southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a high near 71. South wind 10 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Chance of precipitation is 40%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 80%.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Rain Showers Likely then Partly Sunny
|
49°F |
5 to 10 mph
N
|
|
Friday Night
Apr 10
|
Mostly Clear
|
31°F |
0 to 5 mph
E
|
|
Saturday
Apr 11
|
Mostly Sunny
|
53°F |
5 to 10 mph
SE
|
|
Saturday Night
Apr 11
|
Showers And Thunderstorms Likely
|
43°F |
10 mph
SE
|
|
Sunday
Apr 12
|
Showers And Thunderstorms Likely
|
71°F |
10 to 20 mph
S
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms
|
60°F |
15 to 20 mph
SW
|
|
Monday
Apr 13
|
Chance Rain Showers
|
77°F |
15 mph
SW
|
|
Monday Night
Apr 13
|
Showers And Thunderstorms Likely
|
59°F |
10 to 15 mph
SW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
76°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
53°F |
10 to 15 mph
S
|
|
Wednesday
Apr 15
|
Rain Showers Likely
|
66°F |
15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
47°F |
10 to 15 mph
SW
|
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.
