Locally, a frontal boundary will push into and linger across the region for Friday and Saturday. Disturbances moving along the front will provide a periodic risk of showers and thunderstorms. Temperatures are to become increasingly warmer, coupled with a rise in humidity, heading into the weekend.
Across the Corn Belt, showers and thunderstorms are overspreading western portions of the region. Meanwhile in the eastern Corn Belt, cool but dry weather favors late-season planting efforts.
Across the Corn Belt, showers and thunderstorms are maintaining generally favorable moisture levels for emerged summer crops. However, wet conditions are slowing late-season corn and soybean planting efforts.
Across the Corn Belt, thunderstorms in the vicinity of a cold front stretch from the lower Great Lakes region into Iowa. The storms are gradually closing a window of opportunity for late-season planting efforts in the eastern Corn Belt. Much cooler air trails the cold front.
The statewide average rainfall for Illinois in May was 5.6inches, 1.3 inches above average. Combined with the 2.8 inches in March and 7.3 inches in April, the total rainfall for this spring was 15.7 inches. This is the seventh wettest spring on record since 1895 and 4.3 inches above average, according to the Illinois State Water Survey.
Across the Corn Belt, warm air is spreading northward, although relatively cool conditions linger in the Great Lakes region and the Dakotas. Late-season planting continues to quickly advance, particularly in the eastern Corn Belt, while scattered showers and thunderstorms dot the upper Midwest.
Across the Corn Belt, cooler air is overspreading the Great Lakes region, while showers and thunderstorms are affecting the middle Mississippi and lower Missouri Valleys. Elsewhere, dry weather is promoting late-season planting efforts, especially in the eastern Corn Belt.
Across the Corn Belt, showers associated with a cold front are affecting some areas west of the Mississippi River. Meanwhile in the eastern Corn Belt, very warm, dry weather is allowing producers to proceed with corn and soybean planting activities that have been frequently delayed by cool, soggy conditions.