The southeast Wisconsin, Waukesha and Milwaukee forecast for the rest of your Saturday night Sunday night will be okay for the most part, though there will be a slight chance of a shower overnight to the northwest. Temperatures will be mild with lows in the mid-40's.
There will be a weak frontal boundary rolling through on Monday. This will allow scattered showers or a few T'storms to develop from the northwest in the morning first, then work their way to the southeast as the day wears on. No flooding rain is expected. Highs will top out in the upper-60's before possibly falling along Lake Michigan at times.
Monday night will be mild with a chance of scattered showers. Lows will bottom out in the low-50's.
Tuesday looks like it will be the warmest day of the whole upcoming week. There will be a slight chance of a storm, but most of the day will be fine, but windy. Right now, the forecast high is in the upper-70's, but if that lake breeze wins, folks by Lake Michigan wouldn't get quite that warm.
Wednesday will also have a chance of a shower with highs in the mid-60s, but this will be the last, mild day for awhile.
Chances of rain will hang on through Saturday with highs only in the upper-40's to low-50's for the latter part of the week.