Saturday March 20 2021 Forecast (5:42AM)

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DAYS 1-5 (MARCH 20-24)

The Vernal Equinox occurred at 5:37 a.m. .. Spring is here! You know I always warn about thinking any threat of winter weather is over just because spring arrives. Well, we won’t worry about any winter weather threats right now because even though we know what late March & April can do to us here, we have a nice weather pattern to start off the new season as high pressure moves in today and sits atop New England for several days, through Tuesday in fact. Today’s temperatures will be most uniform across the region due to a westerly air flow. Sunday through Tuesday, warmest weather will be inland during the day while coastal areas are cooler due to sea breeze development. Nights will be chilly due to radiational cooling from the combination of clear sky and light wind, though we may see some ground fog formation in lower elevations each night as the temperature makes a run for the dewpoint during its overnight fall. By Wednesday, an increase in clouds and a more regional southeasterly air flow ahead of a warm front will likely make this a cooler-feeling day, and there may be some light rainfall around later in the day or in the evening as the warm front arrives.

TODAY: Mostly sunny. Highs 52-59. Wind W 5-15 MPH.

TONIGHT: Mostly clear. Lows 26-33. Wind W under 10 MPH.

SUNDAY: Mostly sunny. Highs 48-55 coast, 56-63 inland. Wind variable up to 10 MPH with coastal sea breezes.

SUNDAY NIGHT: Clear. Patchy ground fog interior lower elevations. Lows 33-40. Wind variable under 10 MPH.

MONDAY: Sunny. Highs 48-55 coast, 56-63 inland. Wind variable up to 10 MPH with coastal sea breezes.

MONDAY NIGHT: Clear. Patchy ground fog interior lower elevations. Lows 33-40. Wind variable up to 10 MPH.

TUESDAY: Sunny. Highs 49-56 coast, 57-64 inland. Wind variable up to 10 MPH with coastal sea breezes.

TUESDAY NIGHT: Clear then increasing high clouds. Patchy ground fog interior lower elevations. Lows 36-43. Wind SE under 10 MPH.

WEDNESDAY: Mostly cloudy. Chance of light rain by late-day or evening. Highs 48-55. Wind SE 5-15 MPH.

DAYS 6-10 (MARCH 25-29)

Warmest day except cooler South Coast March 25 ahead of a cold front, the parent low pressure of which passes north of the region late March 25 and early March 26 when a better shot of rain occurs, before it turns breezy, colder, and dry later March 26. High pressure brings mostly fair weather, a cool start then moderating temperatures in the March 27-28 period before the next disturbance brings a chance of unsettled weather by March 29.

DAYS 11-15 (MARCH 30 – APRIL 3)

Based on current anticipated timing of systems and being near the border of a mild US Southeast and a cold eastern Canada, expecting a drier but chilly finish to March and a warming trend the first few days of April marked by some unsettled weather during the transition.

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23 thoughts on “Saturday March 20 2021 Forecast (5:42AM)”

  1. TK, thank you. Might be a good week for outdoor restaurant dining … restaurant week. Better for those of us who are vaccinated.

    Quake off coast in Japan, tsunami warnings up.

  2. Good morning and thank you TK. 26 here after low of 25. Still pretty chilly, but expecting a nice warm up.

      1. Today “officially” ends the 2020-21 snow season around here if I’m not mistaken. 😉

        *38.5 inches

        As long as you discount 1970, 1977, 1982, 1987, 1997, 2002. Any others? 😀

        1. May 9 2020 but. Ot sure if Logan had any accumulation. I did come across this for Boston. Inland of course had higher numbers

          May 10, 1977 — 0.5″
          May 8, 1938 — 0.9″
          April 29, 1987 — 0.9″
          April 28, 1987 — 3.2″
          April 27, 1993 — 2.1″

          I love birthday snows because I can remember dates. Brothers bday is April 29, cousins May 9 and of course as you know Macs and my anniversary December 9. I think My family may be descended from Mother Nature

        2. There are a lot of others………..
          Too long to list, and some of them are sizeable.

          The snow season actually runs July 1-June 30.

  12. Let’s see … went to Monet exhibit at MFA, lunch outdoors in Brookline, got 2nd shot at Gillette, 1st day of spring, and perfect weather. I will take as many of these as I can get!!

    1. Good grief. I thought I’d wished you a happy birthday. Then I wondered if I had wrong day and of course side tracked myself. Soooooo I’m hoping you had a special birthday

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