| NWS Forecast for: Waukesha County Issued by: National Weather Service Milwaukee, WI Last Update: 430 PM CDT Sat Apr 18 2026 |  |
| Late This Afternoon: Mostly cloudy. West winds 10 to 20 mph. Tonight: Partly cloudy in the evening then clearing. Lows in the lower 30s. West winds 5 to 15 mph. Gusts up to 30 mph through around midnight. Sunday: Partly sunny. Slight chance of light rain showers and snow showers in the morning, then slight chance of light rain showers in the late morning and afternoon. Highs in the upper 40s. Northwest winds 5 to 15 mph. Chance of precipitation 20 percent. Sunday Night: Partly cloudy until early morning then becoming clear. Lows in the upper 20s. North winds up to 10 mph shifting to the northeast after midnight. Monday: Sunny. Highs in the lower 50s. South winds up to 10 mph. Monday Night: Not as cool. Partly cloudy. Lows in the upper 30s. South winds 5 to 10 mph. Tuesday: Mostly sunny. Warmer. Highs around 70. Tuesday Night: Partly cloudy. Lows in the lower 40s. Wednesday: Sunny. Highs in the upper 60s. Wednesday Night: Mostly clear. Lows in the upper 40s. Thursday: Partly sunny. Highs in the upper 70s. Thursday Night: Partly cloudy with chance of light rain showers and slight chance of thunderstorms through around midnight, then mostly cloudy with light rain showers likely and slight chance of thunderstorms after midnight. Lows in the upper 50s. Chance of precipitation 60 percent. Friday: Mostly cloudy. Chance of light rain showers in the morning, then chance of light rain showers and slight chance of thunderstorms in the afternoon. Highs around 70. Chance of precipitation 50 percent. Friday Night: Mostly cloudy with a 40 percent chance of light rain showers. Colder. Lows in the lower 40s. Saturday: Partly sunny with a 20 percent chance of light rain showers. Cooler. Highs around 60. | |
| Zone Forecast: Waukesha County | |
Visit your local NWS office at: https://www.weather.gov/mkx |