A cold front passing Sunday night will bring cooler temperatures, with shower chances popping up multiple times throughout the week.
For tonight, lows will be in the mid 40s with a northwesterly wind between 10 and 20 miles per hour. There's a slight chance for showers, with partly cloudy conditions persisting. Patchy frost could develop, mainly north and west of Siouxland, where a Frost Advisory is in place.
Monday will be a cool, but near-average, fall day with highs in the mid 60s and a northeasterly breeze between 5 and 15 miles per hour. Isolated showers are possible, but it will be mostly a mix of clouds and sunshine. Overnight temperatures will be in the upper 40s with increasing rain chances.
On Tuesday, highs will be even cooler, in the mid 50s, with scattered showers taking over and continuing into the nighttime hours.
Author's summary: Cooler night ahead with shower chances throughout the week.