National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Hazardous Weather Conditions

Current Conditions

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West Allis WI

7 Day Forecast

For More Weather Information:

Milwaukee, WI Local Forecast Office

Overnight

Wintry Mix Chance for Measurable Precipitation 20%

Wintry
Mix

Low: 29 °F

Sunday

Wintry Mix Chance for Measurable Precipitation 20%

Wintry
Mix

High: 37 °F

Sunday
Night

Cloudy

Cloudy

Low: 30 °F

Monday

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 40 °F

Monday
Night

Rain Chance for Measurable Precipitation 80%

Rain

Low: 37 °F

Tuesday

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

High: 43 °F

Tuesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

Low: 32 °F

Wednesday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 36 °F

Wednesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 27 °F

Detailed Forecast

  • Overnight A slight chance of freezing drizzle after 3am, mixing with snow after 4am. Cloudy, with a low around 29. South wind around 5 mph. Chance of precipitation is 20%.
  • Sunday A chance of snow and freezing drizzle before noon. Patchy fog between 7am and 1pm. Otherwise, cloudy, with a high near 37. South wind 5 to 10 mph. Chance of precipitation is 20%.
  • Sunday Night Cloudy, with a low around 30. South wind 10 to 15 mph.
  • Monday Rain likely, mainly after noon. Cloudy, with a high near 40. Southeast wind 10 to 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Monday Night Rain. Low around 37. South wind 5 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
  • Tuesday A 40 percent chance of rain. Cloudy, with a high near 43. South wind 5 to 10 mph.
  • Tuesday Night A chance of rain before midnight, then a chance of snow. Cloudy, with a low around 32. Southwest wind 5 to 10 mph becoming north after midnight. Chance of precipitation is 50%.
  • Wednesday Snow likely. Cloudy, with a high near 36. Breezy, with a north wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%.
  • Wednesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 27. Blustery.
  • Christmas Day Partly sunny, with a high near 32. Breezy.
  • Thursday Night A 20 percent chance of snow. Mostly cloudy, with a low around 25.
  • Friday A 40 percent chance of snow. Cloudy, with a high near 35.
  • Friday Night A 30 percent chance of snow. Mostly cloudy, with a low around 19.
  • Saturday Partly sunny, with a high near 25.