A strong ridge is expected to build ingo the western part of North America in the coming days, and will likely be in place for the Memorial Day weekend. While most of the country will be above normal, no place will be quite as abnormally warm as the Rocky Mountains.
In Grand Junction, Colorado, temperatures will be in the upper 80s to near 90 over Memorial Day weekend, as compared to a seasonal average of 80. Billings, Montana will be in the low to mid 80s, compared to an average high near 70.
The eastern part of the country will be somewhat warm, but that patch of relatively cool temperatures in the southeast is suggestive of the continued activity in the region. Every where east of the Mississippi is in line for some showers and thunderstorms, particularly in and around the Florida Peninsula