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Boston Weather: 37.0°F | Mostly Cloudy

Weather: Soaked in Spring

By Robert Korty
STAFF METEOROLOGIST -- Today is one of only two days of the year during which every point on the globe is touched by solar radiation. The sun sets at the South Pole and rises at the North Pole today, marking the vernal equinox.

For us in the Northern Hemisphere, the amount of daylight increases at a fast pace in late March (nerdy insight: the time derivative of the length of daylight is at its maximum today).

With the arrival of spring this week, a potent area of low pressure developed in the northern Gulf of Mexico yesterday (be glad MIT’s spring break is not this week: today will be a soaker in Florida). This storm will travel slowly up the East Coast this week, reaching New England by Thursday morning. This storm looks like an all rain event for the metropolitan locales along the coast, but heavy, wet snow may fall just inland over central Massachusetts southward through the Appalachians.

Extended Forecast

Today: Sunny. High of 44°F (7°C).

Tonight: Clear. low of 29°F (-2°C)

Wednesday: Partly cloudy during the morning hours; becoming increasingly cloudy during the afternoon. High of 43°F (6°C).

Wednesday Night: Rain developing. Low of 35°F (2°C).

Thursday: Windy with rain. High of 40°F (4°C).