ROSEBURG, Ore. -- How low will it go?
According to a Special Weather Statement issued by the NOAA: Really cold.
Temperatures are forecast to plummet, with lows in the Umpqua Valley and along the South Coast in the teens - or even lower - possible later this week.
"There is still uncertainty on how cold it will get, but inland valleys are likely to experience nighttime temperatures as low as 10 degrees later in the week," National Weather Service forecasters said.
The cold air starts to arrive Tuesday. Temperatures will likely plunge Wednesday through Friday.
The wind chill will likely make temperatures feel even colder, forecasters said.
And while moisture isn't in the immediate forecast, a system forecast to arrive Saturday could bring snow, sleet or freezing rain to parts of Oregon.
"Confidence is low on the specifics at this time," forecasters said. "Stay tuned to the latest forecasts."
In December, a blast of cold air delivered record-cold temperatures and snow that stuck around for a week, closing schools and disrupting commerce.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEDFORD OR 527 AM PST TUE FEB 4 2014 WESTERN SISKIYOU COUNTY-CENTRAL SISKIYOU COUNTY- SOUTH CENTRAL SISKIYOU COUNTY- NORTH CENTRAL AND SOUTHEAST SISKIYOU COUNTY- NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-MODOC COUNTY- SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST- CENTRAL DOUGLAS COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY- EASTERN DOUGLAS COUNTY FOOTHILLS-JACKSON COUNTY- SOUTH CENTRAL OREGON CASCADES- SISKIYOU MOUNTAINS AND SOUTHERN OREGON CASCADES-KLAMATH BASIN- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...ETNA...FORT JONES...GREENVIEW...YREKA... WEED...MOUNT SHASTA...DUNSMUIR...MCCLOUD...TENNANT...TULELAKE... DORRIS...ALTURAS...COOS BAY...NORTH BEND...REEDSPORT...BANDON... PORT ORFORD...COQUILLE...BROOKINGS...HARBOR...GOLD BEACH... DRAIN...ELKTON...ROSEBURG...SUTHERLIN...GREEN...MYRTLE CREEK... CANYONVILLE...GLENDALE...GRANTS PASS...CAVE JUNCTION... STEAMBOAT...TOKETEE FALLS...MEDFORD...ASHLAND...CRATER LAKE... CRESCENT LAKE...DIAMOND LAKE...UNION CREEK...HOWARD PRAIRIE... SISKIYOU SUMMIT...ALTAMONT...KLAMATH FALLS...BEATTY...BLY... CHEMULT...CRESCENT...GILCHRIST...SPRAGUE RIVER...LAKEVIEW 527 AM PST TUE FEB 4 2014 ...VERY COLD AIR TO RETURN WEDNESDAY THROUGH FRIDAY... A COOL AIR MASS WILL BECOME COLDER WEDNESDAY INTO FRIDAY WITH TEMPERATURES AREA WIDE AVERAGING 10 TO 20 DEGREES BELOW NORMAL. THIS IS LIKELY TO RESULT IN LOW TEMPERATURES ON THE IMMEDIATE COAST NEAR FREEZING AGAIN ON WEDNESDAY MORNING THEN BELOW FREEZING ON THURSDAY AND FRIDAY MORNINGS, WITH LOWS IN THE MID 20S. THE COLDEST MORNING INLAND IS ALSO LIKELY TO BE ON FRIDAY WITH TEENS TO AROUND 20 FOR WEST SIDE AREAS EAST OF THE COAST RANGE, SINGLE DIGITS FOR THE CASCADES AND SISKIYOUS, AND SINGLE DIGITS TO A FEW DEGREES BELOW ZERO EAST OF THE CASCADES. MOST AREAS WILL REMAIN DRY DURING THIS TIME PERIOD, BUT A PACIFIC SYSTEM MAY BRING LIGHT SNOW TO THE FOOTHILLS AND MOUNTAINS WEDNESDAY NIGHT INTO THURSDAY WITH THE BEST CHANCES OVER NORTHERN CALIFORNIA. BEYOND THAT, SUBTROPICAL MOISTURE IS EXPECTED TO PUSH IN FROM THE SOUTHWEST THIS WEEKEND RESULTING IN A HIGH POTENTIAL FOR SIGNIFICANT WIND AND PRECIPITATION ACROSS NORTHERN CALIFORNIA AND SOUTHERN OREGON. THE INCOMING COLD TEMPERATURES ARE UNLIKELY TO BREAK RECORDS, BUT COLD WEATHER SUCH AS THIS WILL REQUIRE EXTRA CLOTHING AND OTHER PRECAUTIONS. PETS, LIVESTOCK, AND TENDER VEGETATION MAY BE ADVERSELY AFFECTED BY THIS COLD WEATHER. ADDITIONALLY, BE PREPARED FOR THE COLD SHOULD YOUR VEHICLE BREAK DOWN. STAY TUNED TO THE NATIONAL WEATHER SERVICE THROUGH THE WEEK FOR UPDATES REGARDING THIS WINTER WEATHER.