Weekend Ups and Downs

***Watch WISN 12 News at 10 p.m. for Milwaukee’s most accurate forecast!***

Thank you for stopping by the Weather Watch 12 Blog!  Halloween weekend is here, and we are tracking a cold front that will bring some ups and downs to southeast Wisconsin. 

Before we look at the weekend forecast, let’s look at weather conditions over the past 5 Halloween’s in Milwaukee. 

  • 2009  High: 47
  • 2008  High: 71
  • 2007  High: 61
  • 2006  High: 60
  • 2005  High: 57   Precipitation: Trace

Notice that overall Halloween has been mild and dry over the past 5 years.  Last year temperatures were a little chilly, and that will likely be the case again this year.

The weekend will start mild, with highs well into the 50s for Saturday.  The wind direction is always a key to the forecast, and on Saturday the winds will be southwest to west for much of the day.  Combining this with some sunshine, above average temperatures look like a good bet(average high in Milwaukee is 54).

By mid-afternoon a cold front will push through southeast Wisconsin, this will signal the end to our one day warm-up, and usher in chilly temperatures for Halloween.  Below is the forecast surface map for 1 p.m. on Satuday.

The area of high pressure over the Dakotas on the map above has a clockwise circulation around it.  This will turn our winds to the north, and also pull in the cooler air.  The cool air will gradually spread over the area by afternoon.  This will lead to daytime highs in the upper 40s on Sunday, but by 4-7pm temperatures will drop back to the 40 to 45 degrees range.  This means that this Halloween will be one of the coolest in the past 6 years.

Just add an extra layer under the kids costumes, and they should have a great time!  If you are out over Halloween and take some pictures, post them to the U-Local section of WISN.com and also send them my way, I may add one to the blog!  Here’s my email  jdnelson@hearst.com 

Have a great weekend!

Jeremy Nelson

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