Brilliant sunshine, light winds along with temperatures reaching the low 40s this afternoon will make for a really nice mid February day. Sunshine will begin to fade late this afternoon as clouds start to overspread the area. With a low pressure system taking shape over the mid Atlantic region it will pass just close enough later tonight and early Thursday to possibly spread light snow over portions of the forecast area. The timeline for the flakes to fly, if they do at all, is looking to be from about 2 am to 7 am or so. For Metro Boston and the immediate suburbs we may see a period of snow showers or flurries, with a coating to one half inch possible. The further north you go the less likely any snow will fall, especially as you get near the New Hampshire border. The further south of the city you travel the better chance of a light accumulation of snow, especially over southeast Massachusetts, including Cape Cod. Overnight lows tonight will fall to the upper 20s to low 30s locally.
All of the clouds and spotty snow will be out of here early on Valentine’s Day as sunshine takes over by afternoon. Early clouds and a snow shower around Boston is possible during the morning commute, with a few slippery spots possible on those side roads. However, temperatures generally climb to the low 40s for the afternoon. The snow pack will continue to erode under the sunshine and mild temperatures. Thursday night will be pleasant as temperatures only dip to the low 30s, which is just cold enough for refreezing to occur once again.
As we move into Friday the forecast becomes a bit more challenging. A clipper low pressure system will move out of the Great Lakes to a position in the Gulf of Maine by late Saturday. We should be on the milder edge of the system as the center moves just to our north. Plenty of clouds will be around, mostly Friday into Saturday night. When the attendant cold front moves through on Saturday we could get a brief shower of rain or snow early Saturday through to mid day. Otherwise, mostly cloudy skies prevail. Highs Friday should be in the low to mid 40s once again and this should hold true for Saturday as well. The overnight lows Friday night range from a few upper 20s to mostly low 30s. However, as the colder air begins to settle into the region behind the cold front we can expect lows Saturday night to be colder from recent nights, with the mercury bottoming out in the mid to upper teens.
An ocean storm should stay away from us as it passes well offshore late weekend. As a result, Sunday is looking to be a partly cloudy and breezy day and much cooler. Highs in the low to mid 30s.