Overnight temperatures over this past weekend were a bit chilly, with some locations in the state dipping below 50°F. Daily record low temperatures were set at Dubuque (48) and Ottumwa (49) along with a few other places. The featured map presents an analysis of coldest temperature on Saturday and Sunday morning based on the NOAA 15-minute RTMA. This product nicely hones in on the subtle river valley topological features over Iowa. It would appear that a number of places reached the mid 40s and a handful of COOP observations seemed to confirm this as well.

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