
Record warmth will persist across portions of California, the Southwest U.S., the central Great Basin and spread across the central U.S. for the middle of the week. High temperatures will approach 90 from Texas to the Ohio Valley. A moist frontal system will bring lowland rain, high elevation mountain snow, and breezy winds to the Pacific Northwest into the Northern Rockies through Wednesday. Read More >
Coverage is affected by many factors.
Read the Coverage Map Notes below to understand these factors on the state and individual maps.
The coverage statistics and maps are calculated using a computer model and station data, assuming ideal conditions. Actual coverage may be 5 to 10 percent below the computer-predicted coverage due to the following factors: