Changes are on the way as we fluctuate from well below normal temperatures to above normal readings through this five day forecast period. Skies will generally range from partly cloudy to mostly cloudy, with snow flurries to rain showers sprinkled in as well. Sounds like a little bit of everything, but not quite.
Below normal temperatures will continue for the next three days, with Friday and Saturday probably the coldest days of the season. A dry cold front will slide through eastern Massachusetts late Thursday night or very early Friday morning, bringing a reinforcing shot of cold air. An upper level disturbance will follow and spreads clouds in here Friday night, with the chance of a few snow flurries or snow showers late Friday night and Saturday. There is an outside chance we could see a coating to half an inch of snow if we get a period of steadier snow. Stay tuned on that.
High pressure and a warm front draped to our south will be the next features we need to pay attention to. The high will begin to move offshore by Sunday bringing a milder south to southwest airflow. We can look forward to much milder temperatures on Sunday and continuing through Monday. However, lots of cloudiness will be around and a threat of a rain shower does exist from Sunday into Monday.
November has been a very dry month, in a year with quite a rainfall deficit already. No heavy rain or snow events are in the short term forecast, which leaves us with a deficit of nearly 3 inches for the month of November, with the overall deficit now about 9 inches for 2012 in Boston.
Five Day Forecast:
Thursday: Mostly to partly sunny, breezy and chilly. High temperatures in the low 40s. Winds west to southwest 12 to 18 mph, with gusts to 25 mph possible.
Thursday night: Increasing clouds. Cold, with lows in the mid to upper 20s. Southwest winds 10 to 18 mph, will become northwest overnight.
Friday: Partly cloudy, breezy and colder. Highs only in the low to mid 30s. Winds northwest to north 10 to 20 mph.
Friday night: Mostly cloudy and cold. Chance of snow flurries or snow showers toward morning. Lows in the mid to upper 20s. Winds northeast under 10 mph.
Saturday: Continued cold, with mostly cloudy skies. Chance of snow flurries or snow showers. Highs in the mid 30s.
Saturday night: Mainly cloudy. Chance of a flurry. Not as cold with near steady temperatures from the low to mid 30s.
Sunday through Monday night: Partly to mostly cloudy and milder. Chance of a shower or two. Highs in the upper 40s to low 50s Sunday, to the low and possibly mid 50s Monday. Nighttime lows in the mid 30s to 40 degrees.