The great weather this week rolls on today with even warmer temperatures expected and perhaps the first 80 degree temperature of the year for places like Ames and Des Moines. The featured map presents an IEM analysis of available long term climate sites for the 50th percentile / median date of first 80 degree temperature for the year. These type of plots tend to be a bit noisy due to differenting periods of record and subtle micro-climate difference, but the overall pattern over Iowa can be seen with values ranging from about the first week of April over southwestern Iowa and the end of April for northeastern Iowa.

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