Wednesday Forecast

30 Comments

7:33AM

DAYS 1-5 (MAY 6-10)

Low pressure heads our way for tonight but before it arrives a good part of today will be nice as high pressure attempts to retain control. The day that starts sunny will end cloudy however as the low advances in this direction, its track taking it just south of New England early Thursday. This will be a rain producer but a few mixed in wet snowflakes cannot be ruled out if the rain falls heavily enough, and this is most likely over southeastern MA in the pre-dawn hours of Thursday. During the day Thursday clouds may break for a bit of sun but another trough of low pressure swinging through from west to east in the evening may produce an additional shower, and behind this comes a shot of unseasonably chilly air for May, setting up an interesting scenario for the next low pressure area, set to impact the region later Friday into Saturday. This one will take a similar track to the first one, but with colder air to work with, and precipitation expected to be a little more substantial, enough cold air can work down to mix it with or even change it to snow across higher elevations of southwestern NH and north central MA, where is where any accumulation (on non-paved surfaces) would take place. I can’t even rule out wet snow mixing in close to Boston. Once the main precipitation shield exits early Saturday, we’ll be left with a blustery day and a few rain/mix/snow showers, depending on your location. Flakes would still be most likely at interior higher elevations, but it will definitely feel more like a March day than one coming in nearly mid May, and very much in contrast to last weekend. Last year’s Mother’s Day was cold and wet with rain, and even some ice pellets mixed in. This year’s will be cool, but breezy and dry, as we’ll still be in the chilly air flow behind Saturday’s storm system. So the next 5 days will be a throw back to early spring, for sure.

TODAY: Sunshine then increasing clouds. Highs 53-60, coolest coast. Wind variable up to 10 MPH with sea breezes.

TONIGHT: Cloudy. Rain developing. Rain may mix with wet snow briefly in some locations, favoring southeastern MA. Lows 37-44. Wind NE 10-20 MPH, strongest near the coast with gusts around or above 30 MPH Cape Cod.

THURSDAY: Cloudy start with rain possible eastern areas. Breaking clouds later. Highs 48-55. Wind N 10-20 MPH.

THURSDAY NIGHT: Lots of clouds. A possible rain shower. Lows 37-44. Wind N 5-15 MPH.

FRIDAY: Mostly cloudy. Highs 50-57, coolest Cape Cod. Wind N 5-15 MPH.

FRIDAY NIGHT: Cloudy. Rain likely, may mix with or turn to snow across interior higher elevations of northern MA and southwestern NH. Lows 33-40. Wind NE 10-20 MPH, higher gusts especially coastal areas.

SATURDAY: Mostly cloudy. Showers of rain, possibly rain/snow mix higher elevations interior northern MA and southwestern NH. Highs 42-49. Wind NW 15-25 MPH.

SATURDAY NIGHT: Clearing. Lows 32-39. Wind NW 5-15 MPH.

SUNDAY: Sun and passing clouds. Highs 52-59. Wind NW 10-20 MPH.

DAYS 6-10 (MAY 11-15)

Rain risk May 11 and dry May 12-13 with temperatures below normal. Milder May 14-15 with dry weather May 14 and a rain shower risk May 15.

DAYS 11-15 (MAY 16-20)

Dry start and end to period with some unsettled weather mid period during a transition to a milder pattern.

30 thoughts on “Wednesday Forecast”

  5. Oh, I know it will change, given its day 10. (On the 00z Euro)

    But a nice 12C at 850 mb right up into New England ahead of a cool front. Hello, low 80s.

    Like, like, like and more like !!!!!

  6. 12Z NAM has tonight’s system mostly off shore and the Saturday system coming
    about right over Boston, meaning NO SNOW for us. 🙂 We shall see what the other
    12Z guidance has to say.

  7. Thanks TK
    What month is it talking about snow and saying things like waiting to see what the other 12z guidance has to say???

  8. 12z GFS starts as rain Friday night then changes to a brief period of snow early morning hours of Saturday morning.

  10. the 12z GFS, at hr 240, looks like the 00z EURO, a nice warm day ahead of a cool front.

  12. Fixed the incorrect dates on section 1.

    I’m not a fan of the updated editor at all. 😛 It sucks… hahaha!

  16. I’m wondering a little bit if that snow threat may overachieve in some places many people would not expect.

    1. 🙂 🙂 🙂

      I hit the like button for the 18Z NAM and 18Z GFS. Will get dashed by the Euro for sure.

      1. Not a lot but for May 9? If that map were to verify, would be one for the history books. Accumulating snow is very rare around here in mid May.

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