| National Weather Service Forecast for:
Waukesha WI Issued by: National Weather Service Milwaukee, WI |
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| Updated: 3:02 pm CDT Mar 19, 2026 | ||||||||||||||||||
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| Tonight |
Mostly cloudy, with a low around 35. East wind around 5 mph becoming southwest after midnight. |
| Friday |
Mostly cloudy, with a high near 54. West wind 5 to 10 mph becoming north in the afternoon. |
| Friday Night |
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 35. Calm wind becoming north around 5 mph. |
| Saturday |
Mostly sunny, with a high near 62. Light south wind becoming southwest 5 to 10 mph in the morning. |
| Saturday Night |
Mostly cloudy, with a low around 41. South wind around 5 mph becoming north after midnight. |
| Sunday |
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 50. North wind 10 to 15 mph. |
| Sunday Night |
Mostly cloudy, with a low around 27. North wind 5 to 15 mph. |
| Monday |
Mostly sunny, with a high near 43. North wind around 5 mph. |
| Monday Night |
Mostly cloudy, with a low around 29. |
| Tuesday |
Mostly cloudy, with a high near 51. |
| Tuesday Night |
Mostly cloudy, with a low around 33. |
| Wednesday |
Mostly cloudy, with a high near 49. |
| Wednesday Night |
A 20 percent chance of rain. Mostly cloudy, with a low around 38. |
| Thursday |
A 30 percent chance of rain. Mostly cloudy, with a high near 56. |
Forecast from NOAA-NWS for Waukesha WI.
