Past IEM Features tagged: range
This week's features have been looking at the yearly range between the warmest high and coldest low. Yesterday's feature showed a downward trend in range, meaning the difference between the warmest high and coldest low was decreasing. Today's featured chart looks more closely at this decrease. The top panel shows the yearly max temperature, the middle panel shows the yearly min, and the bottom panel shows the yearly difference between these two. An overall average is overlain for each series and a trailing 30 year average is presented as well. The trailing 30 year average shows the warmest highs decreasing and coldest lows increasing (both on average), so that would explain the decreasing range.
The featured chart displays the temperature range between the warmest high and coldest low for October for Ames. The bar to date is highlighted in red for this year. Of course, there is plenty of days left in October and the chart would indicate that there is plenty of room to the downside for lower temperatures yet this month. In fact, the average coldest low is 23 degrees which is a far cry from the current low of 45. The forecast for this week does have much colder weather predicted with our best chance to date of a freeze arriving by the end of the week.
Tags: month range