Saturday March 21 2026 Forecast (8:47AM)

DAYS 1-5 (MARCH 21-25)

One system departs this morning with lingering clouds which eventually give way to a sun / cloud mix and a gusty breeze behind offshore low pressure. The next system quick on its heels will approach tonight, and this will be a low pressure wave that dives southeastward across the region during Sunday. Clouds advance tonight, and we can see some light snow / sleet mainly north of I-90, especially north of Route 2 where some light accumulation can occur. To the south, spotty mixed rain, sleet, and wet snow can occur. The frontal boundary associated with the wave slips to the south during Sunday where the focus will be for more widespread precipitation but mostly in the form of rain. It is during Sunday night and part of Monday when we need to watch for a low pressure wave that can spread a shield of snow / mix into the region again, but this may again favor areas to the south. Otherwise it will be generally cloudy, chilly, and raw through Monday. High pressure builds in with briefly nicer weather for Tuesday, though it will be on the cool side with a breeze. The next low pressure system looks like it will take a track to our north Wednesday with slightly milder weather and a chance of rain showers.

TODAY: Mostly cloudy to partly sunny. Highs 43-50. Wind NW 5-15 MPH, higher gusts.

TONIGHT: Partly cloudy, then becoming cloudy. Chance of some snow / sleet mainly north of Route 2 with spotty mix / rain to the south overnight. Lows 32-39. Wind variable 5-15 MPH.

SUNDAY: Cloudy. Early spotty snow / sleet possible southern NH and northern MA. Periodic rain and some possible mix mainly I-90 belt southward otherwise. Highs 38-45 except 45-52 south of I-90. Wind variable to N 5-15 MPH.

SUNDAY NIGHT: Cloudy. Periods of rain, some wet snow / sleet possible, favoring areas south of I-90. Lows 32-39. Wind N to NE 5-15 MPH.

MONDAY: Mostly cloudy. Rain / sleet / snow possible especially I-90 belt southward first half of the day. Highs 38-45. Wind N 10-20 MPH.

MONDAY NIGHT: Clearing. Lows 22-29. Wind N 5-15 MPH,.

TUESDAY: Sunny to partly cloudy. Highs 38-45. Wind NW 5-15 MPH.

TUESDAY NIGHT: Increasing clouds. Lows 28-35. Wind variable under 10 MPH.

WEDNESDAY: Variably cloudy. Chance of rain showers. Highs 50-57, cooler South Coast. Wind SW 5-15 MPH.

DAYS 6-10 (MARCH 26-30)

Unsettled weather chances March 27 and 29. Some up and down temperatures but overall averaging somewhat below normal.

DAYS 11-15 (MARCH 31 – APRIL 5)

Overall pattern looks mostly dry and on the cooler side of normal with one brief interruption from a passing disturbance or storm system, favoring early to mid period.

63 thoughts on “Saturday March 21 2026 Forecast (8:47AM)”

  1. Thank you, TK. 44 Up 3 degrees from our low

    While I understand that we have no control over the weather, I’d sure like to have a day that didn’t leave the deck too wet to enjoy

  2. Wordle in 3….good after only having one letter in the first two.

    Enjoy the Saturday sunshine all!

  3. The heat that had originally been confined to the southwest US, a piece of it is coming east into the southern Plains and even into the southeast for a bit.

    Hawaii continues to receive deluge after deluge.

    And, in contrast, I find Canada to be pretty cold, even by its standard.

    So, somewhat experiencing a lot of higher end anomalies on this side of the hemisphere, at least for now.

    1. You can blame HT for some of that.

      Another note, this is similar to the other “unprecedented” (see what I did there?) later winter / early spring heat of March 1879.

      Some notes from that extraordinary month…

      March 3 1879: 100 in Phoenix for the first time that month, to be reached or exceeded SIX more times for a total of seven times, including 105 on March 27 and 112 on March 28!

      100 was reached or exceed in Tucson and Yuma as well.

      On March 29, the high was 99 in San Diego and Los Angeles, CA!

      High temps in the upper 80s in northern CA several times during the month exceeded the temperature recorded in the current March heat spell.

      So yep, it’s happened before – a long, long time ago. Mainstream media won’t bother digging for such information because then they can’t use the term “unprecedented” to get more clicks and shares. But here, any time I see that, I’ll present the rest of the information not included by them. 🙂

  4. For an area of sutton that rarely loses power, ours had gone off and on three times in an hour. I suspect Nat grid is working on a line and has to shut off to connect. I am not a fan of surges

    1. As is typical for springtime in New England, we’ll have a lot of back and forth, however it’s actually been rather dry and that overall regime will continue, with the wet weather periods being more of the exception, despite the pattern being somewhat active.

      As noted in my discussion, there won’t be a ton of change – just a trend to drier – while it continues to run on the cooler side of normal overall through the next 15 days.

    1. Early trees active by mid March annually.
      Plus mold spores that survive under snowcover and thrive after it melts.

  5. Another little tibit…

    Unusual cold in Alaska is usually part of a larger scale pattern that produce unusual heat in parts of the US (often the West).

    Knowing this stuff far better than people who write headlines comes in VERY handy. And I indeed DO know this stuff pretty well.

    These are interesting things that should be talked about more so we know how one thing impacts another, and so on. 🙂

    #ScienceForTheWin

  6. I have been out a couple of times today. We were up to 52 just a bit after NOON, I just came in again and we’re down to 50.
    The wind is advecting the cooler air and is slowing winning out over the strong March sun. Still, a BEAUTIFUL day just the same. I can take a day like this any time this month.

    1. I absolutely love days like this. They are classic early spring Saturdays. I wrote about these on a local Facebook page recently, geared toward people in my generation. I should find it and repost it here.

        1. I found it. Keep in mind I wrote this for a Woburn page, so there is a reference here to a “Mr. Gangi”, whose family owned the Woburn Bowladrome for decades (more about this place later, actually).

          Anyway here is the post I made just 2 weeks ago, on Saturday March 7.

          ***
          Today, a Saturday in March, reminds you of still watching some cartoons and eating 3 bowls of cereal made more of sugar than anything else (but not admitting to your friends you still watch those cartoons even though they were probably watching the same ones), then maybe watching pro wrestling, or Don Gillis calling a great candlepin bowling match on Channel 5! Then heading outside to realize that either the snow cover was too old and crusty to do anything useful with, and where there wasn’t snow it was too muddy to walk, so you met up with your friends and went to the Woburn Bowladrome, and bowled 2 extra strings you didn’t mark on the sheet, somehow thinking that Mr. Gangi wasn’t going to notice. He did notice (they literally had a counter for each lane), and said “I’m not going to charge you for those this time ….but don’t do that again!” Later you walked home at a slow pace with your friends, and after everybody went their own ways you asked your mother if your best friend could sleep over on the promise that “we won’t stay up all night!” If she answered “we’ll see” then you knew that was as good as “yes!”
          ***

    1. We topped at 53. Down to 49 now. Radar looks clear so I may make the deck after all. Thank you, TK. I’ll credit you with arranging this 🙂

  7. ECMWF op 2m temps – not something to follow, but like getting the amusement out of the simulations, because usually being wrong they do often represent what can take place at a given time of year.

    Like today’s 12z that shows April 2 being in the 40s in Boston while in the 70s west of Hartford CT, or April 3 being in the 70s to lower 80s in eastern MA while just 2 days later on Easter Sunday, April 5, it shows 30s for everybody. 😉

  8. Yup, I agree with everyone above.

    Beautiful first full day of spring.

    Warm sun with temps a little above 50F.

    Here in the arctic north, that’s a win !

  9. Haha thanks for the credit Vicki 🙂 I assure you I didn’t arrange it, but I’ll pretend I did. 🙂

    SSK continued best wishes for your wife! We’re all rooting for her! Stay as strong and positive as you can!

  10. Have been without Comcast service at my house since Thursday. Finally had a tech out today to fix the problem. I am completely off the grid without internet as my cell signal is next to nothing. I truly hate how dependent we have become on technology!

    SSK, very sorry to hear that your wife is back in the hospital. Please know I am praying.

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