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Boston Weather: 51.0°F | Light Rain Fog/Mist

Weather

“Law of Averages”

By Cegeon J. Chan
STAFF METEOROLOGIST

Deep down, you knew it couldn’t last forever. Last week’s spring break weather couldn’t have been any better. Along with sunny and dry conditions, high temperatures were about 10 to 15 degrees warmer than normal. In fact, it was so dry, Boston only received 14.5 percent (0.56”) of the normal monthly precipitation total in March, the second lowest on record.

Waking up to the heavy rain, raw conditions, and maybe even thunder, your instincts of a changing weather pattern have become reality. As expected from the “law of averages,” over the next several days, high temperatures will be 5 to 10 degrees below normal. Expect rain totals of an inch to an inch and a half. As the storm exits later today, a much cooler air mass builds in and sets the stage for some spring snow. While there is still significant uncertainty as to whether a secondary low pressure system will develop, it is likely that some precipitation in the form of snow will fall beginning sometime tonight into tomorrow morning. No accumulation is expected. After that, Thursday will likely be the only dry day for the remainder of this week. So, dig up the umbrella — you’ll be needing it.

Extended Forecast

Today: Rain. Breezy. Much cooler. High in the mid 40’s F (7 C).

Tonight: Light snow showers after midnight. No accumulation expected.Windy with gusts up to 40 mph. Lows in the lower 30’s F (0 C).

Tomorrow: Mostly cloudy. Rain and/or snow showers in the morning. Highs in the mid 40’s (7 C).

Thursday: Partly cloudy. Highs in the lower 50’s F (11 C).