IEM Daily Feature
Tuesday, 30 September 2014

Close to Average is Uncommon

Posted: 30 Sep 2014 05:39 AM

Temperatures again warmed very nicely on Monday for most of Iowa with much of the state again in the 80s. For Ames, the high was 10 some degrees above average, but is that uncommon for this time of year? The featured chart presents the frequency that the daily high temperature is within five degrees of the present day climatology average. The 50% line is highlighted as values larger than 50 represent the most common case. So for much of the year, having a high temperature within this range is not the most common as temperatures are typically either cooler or warmer than +/- five degrees. During the summer time, the frequencies are the highest as our overall temperature spread is dampened by high humidity levels and warm soil temperatures.

Good = 17
Bad = 7
Abstain = 7