Corn Belt rainfall continues
Moderate to heavy showers and thunderstorms are expected to develop and spread across the western Corn Belt today and continue tonight. Some lingering light showers are possible Wednesday morning. A weak cold front will move across the region on Thursday and provide light rain and colder temperatures.
A warming trend begins on Friday and continues into the weekend. Chances of rain increase Saturday afternoon and persist into Sunday. In the eastern Corn Belt states, fair weather and high pressure dominate the region today. High temperatures will be close to normal for the beginning of June. A cold front moving through the region will bring chances for rain and thunderstorms over northwest Illinois tonight and continue over much of the state for Wednesday through Thursday night.
For the last 30 days, temperatures have been averaging slightly warmer than normal over northern Illinois, and much of Indiana and 2 to 3 degrees warmer than normal over Ohio. Temperatures have been averaging slightly cooler than normal over northern Iowa, southern Minnesota, and the eastern Dakotas.
A look at the atmospheric situation: A persistent ridge of high pressure is continuing its presence over the Gulf of Alaska. Combined with a blocking pattern in eastern Canada, it's helping to push cooler Canadian air southward across the upper U.S. Midwest on a frequent basis.
It looks like a normal to cooler-than-normal temperature pattern will probably continue over the northern section of the Midwest for the month of June. This frequent temperature contrast between air masses is helping to continue a wet weather pattern across the Midwest as well. In the short-term, some warmer and drier weather would be helpful to encourage early germination and plant growth and allow soybean and remaining corn acreage to be planted.
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