Waukesha County, WI Weather Forecast
County weather hub
Mostly Clear then Areas Of Fog
Compare major city weather across Waukesha County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Areas of fog after 1am. Mostly clear, with a low around 49. West wind around 0 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
- Aug 23 to Aug 30, 2026
- Latest sync
- Aug 24, 2026 1:11 AM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukesha County
Wednesday looks like the warmest upcoming period in Waukesha County at 82 degrees F.
Tonight is the coolest period ahead with temperatures near 49 degrees F.
The strongest winds are forecast for Tuesday Night at about 5 to 10 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 24, 2026 1:11 AM CDT
- Coverage
- 7 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
Areas of fog before 8am. Sunny, with a high near 76. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 55. Southwest wind 0 to 5 mph.
Mostly sunny, with a high near 80. Southwest wind 0 to 5 mph.
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 64. South wind 5 to 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Southwest wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 61. West wind 5 to 10 mph. Chance of precipitation is 30%.
Sunny, with a high near 80. Northwest wind 5 to 10 mph.
Mostly clear, with a low around 59.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 61.
A slight chance of rain showers after 7am. Mostly sunny, with a high near 79. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Aug 23
|
Mostly Clear then Areas Of Fog
|
49°F |
0 mph
|
|
Monday
Aug 24
|
Areas Of Fog then Sunny
|
76°F |
0 to 5 mph
NW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
55°F |
0 to 5 mph
SW
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
80°F |
0 to 5 mph
SW
|
|
Tuesday Night
Aug 25
|
Partly Cloudy then Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
S
|
|
Wednesday
Aug 26
|
Chance Showers And Thunderstorms
|
82°F |
10 mph
SW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms then Mostly Clear
|
61°F |
5 to 10 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
80°F |
5 to 10 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
59°F |
0 to 5 mph
N
|
|
Friday
Aug 28
|
Mostly Sunny
|
79°F |
0 to 5 mph
N
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
61°F |
0 to 5 mph
SE
|
|
Saturday
Aug 29
|
Slight Chance Rain Showers
|
79°F |
0 to 10 mph
S
|
|
Saturday Night
Aug 29
|
Chance Rain Showers
|
64°F |
5 to 10 mph
S
|
|
Sunday
Aug 30
|
Chance Rain Showers
|
80°F |
5 to 10 mph
S
|
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.
