At a Glance An atmospheric blocking pattern will set up the weekend before Thanksgiving in the East.A storm system will likely bring snow and rain to parts of the Midwest and East Friday into next Sunday.Below-average temperatures will sweep in behind this storm.This pattern may produce additional cold temperatures and snow Thanksgiving week. A blocking pattern in the jet stream could bring another round of cold air, rain and snowto the Midwest and East by late in the week ahead,...

At a Glance Temperatures are expected to be near or above average in the South this winter. The northern tier has the highest odds of seeing colder-than-average temperatures.Precipitation will split between wet across the northern states and dry through the South.A weak La Niña should play some role in the weather conditions this winter. Winter 2017-18 will feature a nationwide split between colder and wetter-than-average conditions in parts of the northern stateswhile the southern tier sees warmer and drier-than-average conditions...

This is a previous version of our forecast for Thanksgiving week 2017. To see the latest update, . ...

At a Glance Some U.S. cities are a few weeks late recording their first accumulating snow of the season.The record latest first accumulating snow has occurred anywhere from November to February in many U.S. cities. The first measurable snow of the season is overdue by a few weeks in severalcities across the nation this year. Accumulated snowfall so far this fall across the United States as of Nov. 29, 2017. (NOAA) Salt Lake City is now more than three weeks...

At a Glance Summits on Hawaii's Big Island have seen several inches of snow this week, leading to road closures.Although it may sound strange, snow here is not unusual. Snow is falling in Hawaii and is expected to blanket the volcanic summits of Hawaii's Big Island at times through Thursday. (MORE: ) Temperatures have fluctuated near the freezing mark over the Big Island summits, where amix of snow and rain is occurring, along with gusty winds. Snow was seen at...

This is a previous version of our forecast for a major weather pattern change in the eastern U.S. to start December. on this incoming blast of arctic air. ...

At a Glance December through February features the coldest temperatures of the season in most of the United States.See when the coldest average low temperature of the season occurs in your location. We've now entered the three-month stretch from December through February that typically features the coldest temperatures of the year in many locations across the United States. Perhaps you are curious about the coldest time of year where you live, historically speaking. These maps from NOAA's National Centers for...

At a Glance La Niña can affect snowfall patterns across the U.S.Weak La Niña events produce different effects than strong events.This winter features a weak La Niña. Weak La Niña conditionsare officially in place and may , potentially influencing the weather conditions in the United States this winter,according to NOAA. This could include the amount of snow that falls over a given region. La Niña is the periodic cooling of the equatorial eastern and central Pacific Ocean. When sea-surface temperatures...

At a Glance December through February features the coldest temperatures of the year in most of the United States.See when the coldest average-low temperature of the season occurs in your location. We've now entered the three-month stretch from December through February that typically features the coldest temperatures of the year in many locations across the United States. (MORE:) Perhaps you are curious about the coldest time of the year where you live, historically speaking. These maps from NOAA's National Centers...

People in Buffalo get treated to thundersnow, with thunder rumbling as snow falls. ...

At a Glance A weather pattern change this week has brought sharply colder weather to the central and eastern U.S.This cold air is increasingly likely to linger into at least mid-December as additional rounds of Arctic air push southward. A sharp pattern change this week has broughtcolder weather to much of the eastern United States that will be reinforced by multiple rounds of Arctic airplunging southward from Canada through the second week of December. (MORE: ) The jet stream pattern...

At a Glance A much colder weather pattern has taken over the central and eastern states this week.Heavy lake-effect snow will affect the Great Lakes, including parts of the Buffalo metro area.Portions of the Northeast, Midwest, South and Appalachians may also see light snow late in the week. You've found an old version of this story. . ...

At a Glance A round of snow will blanket parts of deep south and western Texas and northern Mexico through Friday.While the heaviest snow will fall in the mountains, some accumulations are possible in lower elevations of the high plateau.This Mexican snow will occur before the first accumulating snow of the season in several Northeast and Midwest cities.Snow fell even farther south in a bizarre event in March 2016. Snow will blanket parts of northern Mexico through Friday, giving areas...