Weather Across America

(NATIONAL) Above average and record-breaking temperatures likely throughout California, snow for Southern New England overnight, and a few rounds of light snow over the Upper Midwest/Great Lakes to Central Appalachians.

Upper-level energy over the Great Lakes will move to the East Coast, producing light snow over parts of the Great Lakes and the Central Appalachians through Monday morning. The upper-level energy will also make light rain over parts of the Southeast. In addition, a complicated area of multiple low-pressure systems will produce light to moderate snow over parts of Southern New England through late Monday afternoon. 

Furthermore, an area of low pressure over the Northern Plains will move to the Upper Great Lakes and dissipate by Monday evening. The system will produce light snow over the Upper Midwest that will move into the Great Lakes by late Monday night.

Meanwhile, upper-level ridging over the interior West Coast will allow temperatures in California to reach into the 70s and 80s. High temperatures into the low 90s are possible for southern California, which has prompted Heat Advisories to remain in effect. These warm temperatures will break several daily record highs. 

Additionally, the combination of low relative humidity and gusty winds will lead to an Elevated Risk of fire weather over Southern California. The persistent upper-level ridge responsible for the record-breaking warmth will break down as a strong storm enters the Pacific Northwest overnight Sunday into early Monday morning.

That system will move to the Northern Rockies/Great Basin by Monday evening then move southeastward to the Southwest to the Central Plains by Tuesday evening. The storm will produce coastal rain and higher elevation snow over the Pacific Northwest, with snow expanding into the Northern Rockies by Monday evening. On Tuesday, light snow moves into the Northern Rockies/Great Basin, as light rain showers move over parts of Southern California on Tuesday afternoon into Tuesday evening.

Furthermore, another area of low pressure moving out of Western Canada overnight Monday will move to the Northern Plains by Tuesday evening. The system will produce light snow over parts of the Upper Midwest and expand into parts of the Upper Great Lakes by Tuesday evening.