Waukesha County, WI Weather Forecast
County weather hub
Chance Showers And Thunderstorms
Compare major city weather across Waukesha County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of showers and thunderstorms before 9am, then a chance of showers and thunderstorms between 9am and 1pm, then a chance of showers and thunderstorms between 1pm and 3pm, then showers and thunderstorms likely between 3pm and 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Northwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter 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
- Jul 9 to Jul 14, 2026
- Latest sync
- Jul 8, 2026 5:47 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukesha County
Tuesday looks like the warmest upcoming period in Waukesha County at 89 degrees F.
Friday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Saturday at about 0 to 10 mph NE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 5:47 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
A chance of showers and thunderstorms before 10pm. Mostly cloudy, with a low around 62. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 81. Northeast wind 0 to 5 mph.
Partly cloudy, with a low around 60. Northeast wind 0 to 5 mph.
Mostly sunny, with a high near 82. Northeast wind 0 to 10 mph.
Mostly clear, with a low around 62. Northeast wind 0 to 5 mph.
Sunny, with a high near 85.
Mostly clear, with a low around 65.
Sunny, with a high near 88.
Mostly clear, with a low around 67.
Sunny, with a high near 89.
Mostly clear, with a low around 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Jul 9
|
Chance Showers And Thunderstorms
|
81°F |
0 to 5 mph
NW
|
|
Thursday Night
Jul 9
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
62°F |
0 to 5 mph
NE
|
|
Friday
Jul 10
|
Mostly Sunny
|
81°F |
0 to 5 mph
NE
|
|
Friday Night
Jul 10
|
Partly Cloudy
|
60°F |
0 to 5 mph
NE
|
|
Saturday
Jul 11
|
Mostly Sunny
|
82°F |
0 to 10 mph
NE
|
|
Saturday Night
Jul 11
|
Mostly Clear
|
62°F |
0 to 5 mph
NE
|
|
Sunday
Jul 12
|
Sunny
|
85°F |
0 to 5 mph
E
|
|
Sunday Night
Jul 12
|
Mostly Clear
|
65°F |
0 to 5 mph
S
|
|
Monday
Jul 13
|
Sunny
|
88°F |
0 to 5 mph
W
|
|
Monday Night
Jul 13
|
Mostly Clear
|
67°F |
0 to 5 mph
W
|
|
Tuesday
Jul 14
|
Sunny
|
89°F |
0 to 10 mph
W
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
69°F |
5 to 10 mph
W
|
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.
