Wednesday May 13 2026 Forecast (7:17AM)

55 Comments

DAYS 1-5 (MAY 13-17)

We enter an unsettled weather period today which lasts into Friday as upper level low pressure drifts across our region. A related surface low in the Great Lakes sends its warm front our way today with brief rain possible and a wind shift to south. Before its cold front can cross the region on Thursday, the low redevelops to our south, becoming the main storm system while the initial storm system to the north weakens and dissipates. This low will then spin in the waters south to east of New England later Thursday into Friday before moving away. This evolution provides shifting winds and widespread rainfall for us. As the new surface low evolves our wind will shift from southerly to easterly from Wednesday to Thursday, then to northerly on Friday as the system begins to pull away. The weekend features a different pattern. Low pressure is gone and we find a west to southwest air flow transporting much warmer air into the region along with fair weather as an area of high pressure builds off the Mid Atlantic Coast.

TODAY: Mostly cloudy. Brief light rain period possible mid morning to midday, favoring areas from Boston west and north. Highs 56-63, coolest coast. Wind variable to E up to 10 MPH shifting to S 5-15 MPH with higher gusts by late-day.

TONIGHT: Mostly cloudy. Lows 49-56. Wind S 5-15 MPH, gusts over 20 MPH.

THURSDAY: Mostly cloudy. Scattered to numerous showers. Highs 56-63. Wind S shifting to E 5-15 MPH.

THURSDAY NIGHT: Cloudy. Numerous to scattered showers. Lows 47-54. Wind E 5-15 MPH.

FRIDAY: Mostly cloudy. Scattered to isolated showers. Highs 55-62. Wind E shifting to N 5-15 MPH.

FRIDAY NIGHT: Variably cloudy. Lows 45-52. Wind N shifting to W up to 10 MPH.

SATURDAY: Partly cloudy. Highs 65-72 South Coast, 72-79 elsewhere. Wind W to SW 5-15 MPH.

SATURDAY NIGHT: Partly cloudy. Lows 48-55. Wind SW 5-15 MPH.

SUNDAY: Partly cloudy. Highs 68-75 South Coast, 75-82 elsewhere. Wind SW 5-15 MPH.

DAYS 6-10 (MAY 18-22)

Back-door cold front potential May 18 with fair but cooler weather, especially eastern coastal locations. Fair, warm weather May 19 into May 20 before a cold front brings a shower / t-storm chance later May 20, followed by a slightly cooler air mass with dry weather later next week.

DAYS 11-15 (MAY 23-27)

Watching the potential for low pressure passing to our south around the middle of the Memorial Day Weekend. Whether or not it’s close enough for a wet weather interruption remains to be seen and will be monitored. Fair weather much of this period otherwise with variable temperatures.

55 thoughts on “Wednesday May 13 2026 Forecast (7:17AM)”

  1. RRFS goes full time operational and replaces those other models as of August 31. Delay was used to tweak and fine-tune the performance. Many that are judging it as a bad model are actually viewing the wrong version of the model which was left running and up online while its updated version was sitting there on some platforms unnoticed (by many, not all). šŸ˜‰

    2. Interesting, I was reading Mets on-line who seemed to be, not in favor of this. But, they certainly didn’t mention what you have mentioned in your post.

    3. Followup, so, I use pivotal weather and can call up the RRFS A

      Which version are we seeing, the better version or less better version?

  2. Good morning and thank you TK

    52 after low of 47

    Ocean: 50

    Wordle; a phew 6. Thought I was going to fail for sure. Once again nothing with 1st guess. Can you say caboose?

  4. Thanks TK !

    Failed on Wordle.

    First two guesses, 10 different letters, had nothing.

    Guess 3, (5) new letters, had 1 letter. 1 out of 15

    By the 5th guess, I had 3 uncovered, even in the correct spot, but guessed another incorrect option for the last guess.

    Oh well, onto tomorrow.

  5. Wordle is an odd word. While my new first words yesterday helped a lot, today I had one letter with first, nada with second and a second letter with third

    Iā€™m jumping on the caboose with a PHEW 6

  7. Thanks TK. Would love this system in Jan/Feb.

    As far as the RRFS I thought it was terrible this winter. Consistently showing wrong forecast.

    1. Not to mention the ocean off of Boston is now up to 50.
      That is definitely helping when the wind goes EAST.
      HUGE difference between 40 and 50 in that regard. Better still when it gets to 60.

    1. Hello! Been a hectic past month. Had one catastrophe after another (all house related) and have been focusing on writing when not busy with that. Thanks for thinking of me!

      Also failed wordle today which brought me here.

      1. It’s good to hear from you. I’m sorry about your string of house problems. I hope things improve soon.

      2. Made my day seeing your post. But do sorry life is hectic. Hoping that straightens out soon ā¤ļø

        You are far from alone with the fail.

  13. Thank you TK!

    Wordle: Finally snuck out of the 5 car and moved to the 4 car. I am sure I will back to 5 or 6 tomorrow.

      1. Wondered about Dr S myself yesterday. when was the last time he was on the blog.

  17. Thanks, TK!

    Winds have calmed down a bit, but, boy, were they howling earlier!

    This is item is both weather and sports-related:

    My Vanderbilt Commodore baseball team had a game Friday night in Columbia, Missouri. The start of the game was delayed 2 1/2 hours because of storms and heavy rain. They got underway at 9:30. Around the seventh inning, thick fog rolled in. In the top of the ninth and down a run, the VandyBoys were down to their last out with two on.

    Watch what happens!

    https://www.youtube.com/watch?v=oJ2OlWglJXo

      1. The game gets suspended to Saturday afternoon tied 7-7 and Vanderbilt ends up losing the game to the Tigers in the 10th.

  18. Thanks TK.

    I may share some thoughts on the NAM/RRFS situation at some point, but that would be a lengthy discussion and thereā€™s already plenty of information out there about some of the pros/cons.

    In the meantime, what a tricky QPF forecast for eastern New England next 48 hours. Would be a nightmare forecast if frozen precip were invovled. Basically looks like a ā€œphasing failureā€ between an approaching clipper and an offshore southern stream low, but still with most models showing good QPF in eastern New England due to redevelopment of the clipper and possibly even a Norlun trough type effect? And/or some of the southern stream moisture getting entrained in the clipperā€™s circulation despite the lack of a clean phase? Would really be interested in another metā€™s take on whatā€™s going on there.

    In terms of actual rainfall I tend to lean in the higher direction, although there may still be areas that get screwed big time based on the complexity of the evolution. Maybe an over/under storm total rainfall of 1.00ā€ for BOS? But I could reasonably see it less than half that or more than double.

    If it delivers on the high end, could be a major drought-denter, though still not a buster of the long term precip deficits especially with what looks like a potentially prolonged warmer and drier pattern looming for the East later May and into Juneā€¦

    2. Thank you! Generally agree on all! Interested to hear your latest thoughts on the model situation. It kind of reminds me a bit of when the “ETA” was new…

  19. We had a pleasant surprise of some decent sun down here for a few hrs mid afternoon. Very nice !!

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