Warm & Hot Start To October
by Kelly Smith, Meteorologist
October 14, 2011 8:15 PM
October has gotten off to an above average temperature month, but temperatures will soon take a plunge.The month of October may be the first month of fall, however the October of 2011 has felt more like the end of summer. The first 13 days in October saw above average temperatures in Sioux Falls and an 18 day stretch of above average high's. Average High Temperatures for the Month of October were 16 degree's above the average monthly temperature in Sioux Falls. The entire area saw well above average temperatures in October. Night time low temperatures were well below average as well.Sioux Falls saw average Low Temperatures 14 degree's above average, while the entire area saw low temperatures between 10 degrees and 15 degrees above average.
Along with above average temperatures, below average rainfall has caused drought conditions around the area to form.Severe drought conditions have developed in Southwestern Minnesota, and moderate drought conditions have increased in the area. This is due to the fact that October has been a very dry month for most areas
.While most areas saw below average rainfall, Mitchell actually saw a good amount of rainfall putting their rainfall totals above average. The start of October is really not where the drought conditions started, an abnormally dry September contributed. The month of September was the driest September on record in Sioux Falls, with only 0.2" of rainfall the entire month. When you add the past three months of rainfall together, it paints the picture of just how dry Sioux Falls really is.Sioux Falls, is almost 6 inches below average in rainfall, with Sioux City shortly behind at 5.30" of rain below average. Mitchell and Huron were still well below average at around 2 and a half inches below average.
While the drought conditions are going to continue, with no real great chance of heavy rainfall in sight, those above average temperatures are going to be a thing of the past.At the beginning of next week a significant trough of low pressure forms and pulls very cold Canadian air south towards South Dakota.The strong tough pulls south some very cold temperatures. The eastern and northeastern portions of South Dakota, will see the coldest temperatures. The thick blue line is the 32 degree (freezing line) which stretches all the way into northern Arkansas. Here in South Dakota, the -2 celsius (28 degrees F) and -4 celsius (24 degrees F) are present. Now, this does not necessarily mean temperatures to drop that far, but it is an example of nightime lows expected to drop below average.
Also, keep in mind that High's around 60 degrees and Low's around 37 degrees are seasonably average. So this weekend when we see low's in the high 30's it will feel colder considering we have been above average for so long.