Sunday December 21 2025 Forecast (5:52AM)

48 Comments

DAYS 1-5 (DECEMBER 21-25)

The winter solstice occurs this morning at 10:03 a.m. EST! Our day will be fair and breezy but not too cold as moisture-starved low pressure passes to our north. Its cold front swings through later in the day and leads a colder air mass into the region for Monday with continued dry weather. A clipper low dives our way for Tuesday with a period of snow, except some mixing / rain along the coast for a time. I’m expecting generally minor accumulations with this event (mostly under but up to 3 inches of snow, depending on location). A quick passing trough can bring a snow flurry on Christmas Eve, otherwise generally fair weather is expected for the holiday period through Christmas Day.

TODAY: Partly sunny. Highs 40-47. Wind SW to W 10-20 MPH with higher gusts.

TONIGHT: Partly cloudy. Lows 21-28. Wind W to NW 10-20 MPH.

MONDAY: Mostly sunny. Highs 30-37. Wind NW 10-20 MPH, diminishing.

MONDAY NIGHT: Clear early, clouds return later. Lows 23-30. Wind S up to 10 MPH.

TUESDAY: Cloudy with snow (except a period of mix/rain coast), accumulation 1 to 3 inches except less than 1 inch near the coast. Highs 35-42. Wind variable 5-15 MPH.

TUESDAY NIGHT: Partly cloudy. Lows 18-25. Wind variable to NW 5-15 MPH, higher gusts.

WEDNESDAY: Variably cloudy. Slight chance of a passing snow shower. Highs 32-39. Wind W 5-15 MPH.

WEDNESDAY NIGHT: Partly cloudy. Lows 20-27. Wind W up to 10 MPH.

THURSDAY (CHRISTMAS): Partly cloudy. Highs 35-42. Wind SW 5-15 MPH.

DAYS 6-10 (DECEMBER 26-30)

Up-and-down temperature pattern, leaning toward slightly below normal with a couple disturbances potentially bringing mostly minor precipitation events – storm track trend favoring them passing to our north in the expected large scale pattern.

DAYS 11-15 (DECEMBER 31 – JANUARY 4)

A similar pattern continues as we end 2025 and reach the first few days of the New Year.

48 thoughts on “Sunday December 21 2025 Forecast (5:52AM)”

  4. Thank you, TK. Up to 38 from
    34 low. I echo Julie’s yay snow. And it doesn’t look to disrupt travel or cause outages.

    Reply

  7. I see the wordle challenge is out. Just waking up. Need to eat. Will try soon. Not sure I am up to the challenge. 2 3s and a 4 already at this hour on a Sunday. Was up late last night as we watched Love Actually after attending a Christmas party. No, I am not hung over as I do NOT drink.
    I might have a food hang over though as I consumed more Christmas cookies than I should.

    Reply

  10. Good morning and thank you TK.

    41 up from 36. Some snow showers overnight or should I say Virga showers.

    Ocean: 46

    TK, when you posted less than an inch near the coast, was that for the South coast OR EAST cost or both?

    So what is up with the SSRA-S? Very robust near the East coast. Has it lost its way as it is clearly the Outlier OR has it encountered conditions that it doesn’t know how to handle? Did they forget to add the clipper sub routine???

    WORDLE: 4
    Thought for sure I had it in 3.
    SHOULD have remembered it had that word a month or 2 ago. Then I would have used the other word which I did on guess 4 which, of course was correct.

    Reply

  14. 12Z NAM shows redevelopment to our South

    https://www.pivotalweather.com/model.php?m=nam&p=ref1km_ptype&rh=2025122112&fh=60&r=conus&dpdt=&mc=

    But it moves off

    https://www.pivotalweather.com/model.php?m=nam&p=ref1km_ptype&rh=2025122112&fh=63&r=conus&dpdt=&mc=

    https://www.pivotalweather.com/model.php?m=nam&p=ref1km_ptype&rh=2025122112&fh=69&r=conus&dpdt=&mc=

    Kuchera Snow

    https://www.pivotalweather.com/model.php?m=nam&p=snku_acc-imp&rh=2025122112&fh=69&r=us_ne&dpdt=&mc=

    Reply

      1. That is what I was thinking as I looked it over.

        Any comments on the RRFS-A?
        That model has been Schizophrenic the last couple of days.

        Growing Pains? After all, it is still technically Experimental.

        Reply

        1. Yes, it’s still going to struggle with some events, like this type. A work in progress. Its handling of more convective-based events is pretty decent!

          I think in this case it was just going back and forth between two vorticity maxima, trying to “decide” which one was to be dominant.

          Reply

    1. Too bad it’s an operational run more than 4 days out, and quite above the ensemble mean…

      Pattern doesn’t really support anything that large without it slowing down.

      Reply

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