For people who are sick of the cold and snow and hoping for a quick end to winter, Chief Long-range Forecaster Joe Bastardi may have bad news.

More persistent cold is expected to hold strong through at least mid-February across much of the eastern two-thirds of the country. Bastardi also expects wintry events to last into April in some areas, which would be longer than last year.

Based on what is predicted for the rest of the season, Bastardi also says that this winter could end up being the coldest for the nation since the 1980s.

While cold temps naturally come with winter, the persistent nature of colder-than-normal conditions along with an absence of an occasional brief warm spell, have been unusual this season. Temperatures since Dec. 1, 2010 have averaged below normal from Boston and New York City to Chicago, Minneapolis, New Orleans, Atlanta and even Miami.

Temperatures are expected to continue averaging below normal in many of those areas, from the northern and central Plains into the East, through at least the mid-February.

February’s biggest snowstorms will target areas mainly north of a line running from the Mason-Dixon Line to the Ohio River and I-40 across the Plains, according to Bastardi.

Just to the south of this line (from Amarillo, Texas, to about Atlantic City, N.J.) is where Bastardi expects storms to vary between producing snow, ice and rain for the bulk of the remaining winter.

It will not be until late February into March that opportunities to break the colder-than-normal weather pattern will surface. However, Bastardi warns that there could be a return of cold and storms across the northern part of the nation, including the Great Lakes and Northeast, from mid- or late March into April.

He says this will be quite a change for the Great Lakes and Northeast as compared to last year, when those regions experienced their warmest back-to-back March and April on record.

He adds that late-season winter storms in the Plains and East are common during La Niña systems, when sea surface temperatures across the equatorial central and eastern Pacific are below normal. Bastardi says the current La Niña could continue into next year.

La Niñas also tend to "conjure up a more intense severe weather season," he notes. This typically ramps up in April into May from the southern Plains to the Great Lakes, mid-Atlantic and Southeast.

Above-normal warmth recently established in the interior Southwest is expected to persist through February and, in some areas, through March and April. Bastardi says this warmth should spread into Texas.

That’s not to say there won’t be periods of chillier weather for the Southwest and Texa. In fact, temperatures are expected to average out near if not below normal much of this last week of January.

While cold air stays focused over the eastern two-thirds of the country through at least mid-February, temperatures across much of the interior West are expected to be above normal. This will be due to the jet stream’s position over the western coast of North America being well north over British Columbia.

Changes may start taking place for the region late in February, with a transition to below-normal temperatures in the Northwest and northern Rockies through much of March.

Precipitation has been above normal across much of the Northwest this season. Overall, Bastardi expects the region to continue to see above average precipitation through the rest of the winter, with more snow and ice across the interior and mostly rain west of the Cascades.

For Southern California, which was hit with epic rain and flooding in December, drier-than-normal conditions have set in since the New Year. Bastardi says that precipitation should average out below normal for the rest of the winter.