While the northern Plains got some moisture in the first half of April, rainfall was less common in parts of the eastern Corn Belt and western U.S. in the same timeframe. To start this week, that’s likely to change; a cold-weather system from the Arctic will deliver cold temperatures and potentially frost warnings from the Texas Panhandle to the Great Lakes Basin. Meanwhile, a system in the Pacific Ocean could deliver badly needed rainfall to the West Coast moving through Monday and into Tuesday. A line of snow from northern Colorado, parts of Nebraska and Kansas will spread through parts of Iowa, Illinois and into Indiana and Michigan by late Tuesday. As that front moves east, parts of Ohio could receive measurable snowfall, though it’s likely to melt quickly. It could endanger some of the newly planted corn and soybeans where temperatures are expected to sink, so be ready to scout fields for any seed chilling damage that could trim as much as 20% of your yield potential. See more on the weather to start the week.