In the West, dry weather prevails from California into the Southwest, although cool conditions are slowing crop development. Snow is falling across parts of the northern Intermountain West, while showers are overspreading the Pacific Northwest.

On the Plains, widespread showers are developing, mainly from South Dakota to Oklahoma. The rain is slowing fieldwork but boosting moisture reserves for winter wheat and emerging summer crops.

In the Corn Belt, rain is beginning to overspread the southwestern fringe of the region. Meanwhile, cold weather lingers across the eastern Corn Belt. In particular, freezes on May 9 and 10 in Michigan posed a threat to fruit crops, which are being monitored for signs of damage. In addition, isolated corn fields across the northern Corn Belt may need to be replanted due to the effects of the May 8-10 cold snap.

In the South, rain is returning to parts of the lower Mississippi Valley, including portions of flood-ravaged western Tennessee. Elsewhere, dry weather is promoting summer crop planting, emergence, and growth.

Outlook: Cold weather will shift into the interior Northeast on Tuesday morning, where fruit producers will be monitoring the effects of a late-season freeze. For the remainder of the week, a series of storm systems will maintain showery conditions from the Intermountain West into the Northeast. By week’s end, Midwestern
rainfall could total as much as 2 to 4 inches. Farther south, scattered showers and thunderstorms will develop over the central and southern Plains and spread across the interior Southeast. In contrast, mostly dry weather will prevail through the end of the week in the Southwest and lower Southeast. The NWS 6- to 10-day outlook for May 15-19 calls for near- to above-normal temperatures nationwide. Warmer-than-normal conditions will be most likely across the north-central U.S. Meanwhile, wetter-than-normal conditions in parts of the South and Pacific Northwest will contrast with near- to below-normal precipitation across the remainder of the U.S.