It was a struggle on Monday for some locations in Iowa to warm up. Spencer reported a high temperature just four degrees warmer than the low temperature. The featured chart presents the frequency of having such a small temperature difference per month. Overall, these events happen a few times per year with the coldest half of the year being the preferred period. In the summertime, it is very difficult to keep the sunshine from warming us up as extremely optically thick clouds tend not to persist the entire day.

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