Cool Weekend Ahead

While we've got a couple nice days coming this week, the weather this weekend could turn very chilly with the possibility of our first frost - if not freeze, Saturday night.  A big ridge of high pressure in the west that extends all the way from Canada down to the four corners will cause a dip in the jetstream across the Great Lakes.  This will allow very cool, Canadian air to overspread much of the Stateline beginning Friday and lasting through Sunday.  High pressure at the surface will keep a northerly wind for much of the weekend but an upper level trough may bring a few more clouds (with a few showers) Saturday afternoon and keep temperatures in the mid and upper 50s for highs!  Now if we can get rid of the cloud cover and skies clear Saturday night lows could very well fall near the freezing mark!  While this won't have too much of an impact on the crops left in the field because a lot of the soy bean crop has matured and the corn is probably black layered, flowers and vegetables could see an impact.  Not only will cloud cover play an important role but the location of the trough will be watched as well.  If it shifts a little further to the east, the bulk of the cooler air will be shifted east as well.  Either way it's going to be a chilly weekend!  If temperatures were to dip to the freezing mark or below, we would pretty much be right on target as far as our averages.  The average first frost is around September 25th and the first freeze around October 7th.