As much as a 50 percent chance of snow is forecast for the Tri-Cities later this week by the National Weather Service.
It predicts a 20 percent chance of snow Tuesday, increasing to 30 percent overnight.
Wednesday the chance of snow is 40 percent, with snow more likely that night. The chance of snow then is 50 percent, according to the forecast.
Skies should clear Friday and Saturday.
Temperatures will remain unusually cold for March, even though there will be some warming through the week.
A low of 5 degrees was forecast for Sunday night and 12 degrees on Monday night.
Lows should warm to the low 20s starting Wednesday night and highs could reach 37 degrees by Friday.
However, normal highs for early March are about 53 and normal lows are about 31.
Many rural roads near the Tri-Cities were closed Sunday after snow from February blew across roadways and created new drifts.
Highway 241 from near Sunnyside to Highway 24 remained closed Sunday afternoon. But Highway 221 from near Prosser to near Paterson was reopened in both directions before noon Sunday.