A somewhat subjective rating of the time of day, on a scale of 0 to 10.
2/10: 1 for the weekend and 1 for a chance to see a flake of snow before the cold rain.
- Today: Winter mix with rain. Highs: 34-44.
- Tonight: End of the rain. Clear and windy. Minimums: 29-35.
- Tomorrow: Partly to mostly sunny. Windy. Highs: 42-47.
Rain and temperatures in the 30s are as bad a weather combination as they come. While every move north and west of Washington increases the chances of seeing snow, much of the area should quickly change to rain as the storm passes. A layer of slushy snow and a couple of inches of snow will most likely form in Loudoun and northwestern Montgomery counties. To see much more than that, you’ll need to drive into the mountains to the west or north, toward the Mason-Dixon line.
Today Saturday): Precipitation approaches the region around dawn. It may take a few hours for the air mass to become saturated and snow or winter mix to reach the ground. Up to a few hours of mixed precipitation (snow, sleet and freezing rain) is possible near and west of Interstate 95 before it transitions to all rain at noon. East of I-95, most or all of the precipitation will likely fall as rain. The rain-snow line should move toward the mountains during the afternoon. Before transitioning to rain, watch out for some slick spots on untreated roads and paths, especially in our colder areas. Once precipitation turns into rain, it can sometimes be intense.
Temperatures may struggle to reach much above freezing west and north of Leesburg and Frederick, while 30s to near 40 are common for high temperatures near the Beltway. Highs could reach the upper 40s or mid 40s in southern Maryland. Winds blow from the east and northeast between 10 and 20 mph. Confidence: Medium-High
Tonight: As the center of the storm passes over southern Maryland around sunset, the steady rain ends. About an inch of rain could fall. Skies are partly clear overnight, but one or two persistent and patchy showers cannot be ruled out. The minimum temperatures range between 29 and 35 degrees. Gusty northwesterly winds should help dry out wet surfaces, reducing the risk of wet areas freezing, but keep an eye on temperatures and take care just in case. Confidence: Medium-High
Tomorrow Sunday): A shower could persist into the early morning hours, but clouds tend to be light for most of the day. Temperatures rise mostly to the mid 40s, with some upper 40s mixed in. It is breezy after the storm, with northwesterly gusts up to around 25 mph. Confidence: Medium-High
Tomorrow night: Mainly clear conditions rule the night. The winds remain a bit strong, which helps keep the wind chill below actual temperatures. Lows are mainly in the upper 20s and lower 30s. Confidence: Medium
High pressure is under control Monday as the next storm looms over the southern plains. We should see light winds in addition to mostly sunny skies. Mid to upper 40 degrees for highs. Confidence: Medium
There is no rest for those weary of the storm. Tuesday”s storm, although it will pass well to the west, will draw an enormous amount of moisture from the south. Heavy rain is a good bet, especially in the afternoon. Totals of 1 to 2 inches seem likely. Temperatures are in the 50s and maybe around 60. Confidence: Medium
A daily assessment of the potential for at least 1 inch of snow in the coming week, on a scale of 0 to 10.
4/10 (→): Consideration was given to reducing this to 3 as any snow on Saturday will be short-lived, but sometimes it doesn’t take long for some snow to accumulate. The best accumulation possibilities will tend to be far west and north of the city.