The high temperature for Ames today is expected to remain slightly below freezing making for the sixth straight day with a high temperature below 32F. The featured chart looks at the frequency of such streaks partitioned by week of the year. For mid March, the frequency is rather rare at less then 5%. The frequency shown is for an individual day having a temperature below 32 and its most recent five days below 32 as well. It is interesting to see the frequencies during winter not being all that extreme. Prolonged freezing weather is difficult to maintain without significant snow pack or sustained shunting of warmer air masses to our south.

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