Our first snowstorm of the winter is on the way for Sunday night and early Monday.

The cold front that brought us some rain Saturday evening has moved offshore and it will slow down today, with a wave of low pressure riding up along it tonight and early Monday. Clouds will move back into the region this afternoon ahead of this wave, with snow developing from southwest to northeast by late afternoon/early evening. Temperatures will be warm enough for the precipitation to start as rain across Cape Cod and parts of southeastern Massachusetts, but even there, the rain/snow line will collapse southward tonight. With temperatures dropping during the evening and overnight, the snow will be more fluffy, especially north and west of Boston. During the evening hours, we could see a burst of moderate to even heavy snow, with some places picking up an inch or so per hour. The snow should taper off to snow showers after midnight, but likely won’t end until shortly before daybreak on Monday.

So, how much can we expect? North and west of I-95 most places will see 4-8 inches by the time everything winds down Monday morning. South and east of I-95, we’re looking at 3-6 inches, since there may be a little rain to start, and the snow won’t be as fluffy with temperatures a little milder. Once you get down to the South Coast, it’ll be more like 2-4 inches due to the rain at the start, with 1-3 inches across Cape Cod, heaviest towards the Canal.

Make sure you clean up your driveway Monday morning. Gusty winds behind the system will result in a little blowing and drifting snow, but it’s going to turn much colder for a few days. Temperatures on Monday may not get back up to 20 in the afternoon, and we’ll likely stay in the teens during the day on Tuesday and Wednesday, with wind chills near or below zero. Night time lows will also be in the single digits or below zero for many of us as well. We’ll have more details on this in our Weekly Outlook early Monday.