Baby it's cold outside, and wet. And according to the National Weather Service, it will continue throughout Christmas.

Rains have pounded the region, causing the NWS to issue a flood warning along the Napa River. The rain is expected to continue through Christmas but is expected to taper off by Wednesday evening.

The flood warning is in place for the Napa River near St. Helena until Monday morning or until the warning is cancelled, the NWS said. At 1:30 p.m., Sunday, the stage was at 15.4 feet. Flood stage is at 16 feet, with minor flooding forecast. 

"At 18 feet, moderate flooding across lower areas of towns along the reach (is expected)," the flood warning read. "Primary and most secondary roads will flood, making travel difficult to nearly impossible in some areas."

Take a look at the forecast for the week:

7-DAY FORECAST

• Late Afternoon A 40 percent chance of showers.  Mostly cloudy, with a high near 55. West wind around 10 mph.
• Tonight A 40 percent chance of showers, mainly before 7pm.  Patchy fog after 10pm.  Otherwise, cloudy, with a low around 37. West wind 5 to 7 mph becoming calm  in the evening.
• Monday Cloudy, then gradually becoming mostly sunny, with a high near 54. Light south wind.
• Monday Night A 10 percent chance of rain after 4am.  Mostly cloudy, with a low around 35. North wind around 5 mph becoming calm  in the evening.
• Christmas Day Rain likely, mainly after 10am.  Mostly cloudy, with a high near 52. East wind 5 to 7 mph.  Chance of precipitation is 70%.
• Tuesday Night Showers.  Low around 38. Chance of precipitation is 80%.
• Wednesday Showers likely.  Mostly cloudy, with a high near 53. Chance of precipitation is 60%.
• Wednesday Night A chance of showers.  Mostly cloudy, with a low around 35.
• Thursday Mostly sunny, with a high near 53.
• Thursday Night Mostly cloudy, with a low around 34.
• Friday Partly sunny, with a high near 52.
• Friday Night A slight chance of rain.  Mostly cloudy, with a low around 33.
• Saturday A chance of showers.  Partly sunny, with a high near 53.
• Saturday Night A slight chance of showers.  Mostly cloudy, with a low around 33.
• Sunday A slight chance of showers.  Partly sunny, with a high near 53.