Tuesday August 20 2024 Forecast (7:05AM)

38 Comments

DAYS 1-5 (AUGUST 20-24)

The beginning of the day catches the transition from one air mass to another in progress, with dew points still near 70 over Cape Cod but in the 50s in north central MA and southwestern NH. Between them is a cold front, about to slide offshore via the South Shore & South Coast. One more quick round of showers will visit RI and southeastern MA this morning under a canopy of clouds associated with the front, and then we’ll enjoy a day of mixed sun and clouds with lower dew points and cooler air. Comfortably low humidity continues through mid week along with below normal temperatures as upper level low pressure crosses the region. This feature will be responsible for the development of clouds each day Wednesday and Thursday. Scattered showers and even a few thunderstorms can and likely will pop up Wednesday, a few potentially producing small hail due to the cold air aloft. Thursday’s activity should be limited to more isolated showers favoring areas north of I-90. This low departs by Friday and high pressure builds in with fair weather that lasts into the weekend, including a warming trend.

TODAY: Lots of clouds through mid morning including areas of fog South Coast and a round of showers moving through RI and southeastern MA. Cloud/sun mix thereafter. Highs 68-75. Dew point starts out ranging from the 50s north central MA and southwestern NH to near 70 southeastern MA, but drops to the 50s all areas. Wind N to NW 5-15 MPH.

TONIGHT: Partly cloudy. Patchy fog interior lower elevations. Lows 51-58. Dew point lower 50s. Wind N up to 10 MPH.

WEDNESDAY: Most sun in the morning, more clouds midday and afternoon when a passing shower or thunderstorm is possible. Highs 68-75. Dew point around 50. Wind N up to 10 MPH but can be gusty around any showers and storms.

WEDNESDAY NIGHT: Partly cloudy. Patchy fog interior lower elevations. Lows 50-57. Dew point upper 40s to 50. Wind variable under 10 MPH.

THURSDAY: Partly sunny. A pop-up shower possible mainly north of I-90 during the afternoon. Highs 70-77. Dew point near 50. Wind variable up to 10 MPH with coastal sea breeze possible.

THURSDAY NIGHT: Partly cloudy. Patchy ground fog inland lower elevations. Lows 48-55, coolest inland lower elevations. Dew point sub-50. Wind variable under 10 MPH.

FRIDAY: Mostly sunny. Highs 73-80. Dew point in 50s. Wind W 5-15 MPH.

FRIDAY NIGHT: Clear. Fog patches interior lower elevations. Lows 55-62. Dew point in 50s. Wind W to SW up to 10 MPH.

SATURDAY: Sunny. Highs 80-87. Dew point in 50s. Wind W to SW 5-15 MPH.

DAYS 6-10 (AUGUST 25-29)

Overall pattern looks fairly rain-free with more typical late summer warmth. One disturbance around August 26 or 27 can produce a shower or thunderstorm threat otherwise high pressure controls the weather most of the time.

DAYS 11-15 (AUGUST 30 – SEPTEMBER 3)

Limited wet weather chances / mainly dry weather with high pressure mostly in control. Higher humidity potential for mid to late period. Early call on Labor Day Weekend (August 31 – September 2) looks mainly fair.

38 thoughts on “Tuesday August 20 2024 Forecast (7:05AM)”

    1. It’s shy in always happy to see August. Low of 58 only here but now 63 with a 56 DP and lovely breeze

  4. I am actually COLD as I sit here at my desk!!!
    I should have worn a long sleeve jersey or shirt instead of short sleeve!!!!

    I just threw on a sweatshirt!!!!

    What a change!!!!!

    Welcome AUTUMN!!!!

    temp 67
    dp 56

    1. A sutton friend said on her FB page that it’s swestshirt weather. Not quite for me but sure feels awesome.

  6. Boston has lost its entire positive temp departure in favor of one slightly negative. Further negative thru Friday.

        1. I’m not surprised in the negative anomaly with the weather we’ve seen, but I’m shocked at what the pattern has been after the first few days of the month.

  8. Tweet last night. Eric forwarded tweet from Colin Gross

    JimmyJames, I thought of you.

    Eric Fischer….

    “Exceptional, catastrophic rainfall from two localized convergence zones yesterday & last night “

    Colin Gross

    “2 areas of extreme rainfall over the last 24 hours in southwest Connecticut and Long Island. Both areas received 6-12+ inches! This caused catastrophic flooding and prompted Flash Flood Emergencies to be issued. The MRMS recurrence interval is greater than 200 years! “

    A comment mentioned this happened in Dartmouth MA area after Alberto in 2014

    https://x.com/ericfisher/status/1825527969068032264?s=61

  10. Vicki just a terrible situation in parts of western and southwestern CT. In fact two people in Oxford died from the flooding on Sunday. It’s going to take months to clean up the damage. Southbury, Oxford, and Monroe seem to be the hardest hit towns.

  11. Thanks TK! While the air is refreshing I am not ready to let go of summer yet and am glad to see temps rebounding this weekend.

    My sister lives in Commack Long Island and they received 8.92 inches of rain – most of it between 1 and 4am. She has significant water damage – basement and windows where water got in to house, Insurance costs in that area will be significant with this one. HTE strikes again!

  13. Tom, I’m seeing reports of a house fire in Duxbury on Bay Ave maybe. Humarock folks can see the smoke from the beach. I suspect you might see if too

        1. 7 and 5 have coverage. 5 reporting no people or animals in the house. It’s on the ocean which explains why it was so visible from Humarock

          1. There’s a beach we frequent btwn Burke’s beach (green harbor) and Duxbury beach. It’s Avon st beach as the lot is off Avon st. I’m sure I would have seen the smoke had we been there today.

  14. 69/70F at Logan today, I think that’s the avg high the last week of September at Logan.

    This can only mean we’ll hit 95-100F for a day, sometime before the equinox.

      1. 🙂 🙂 🙂

        There’s not meteorology that shows that, I just figure that would be a New England thing to happen, weather wise.

        1. No repeat of 1983 upcoming. But we will have plenty of warm days and maybe a few more hot ones before we fully let go of summer. 🙂

          1. I figured thaf. But then knowing there are breaks make it easier for my to convince my old person inside to deal with it. And I remember 1983. First trimester of that heat and no one forgets.

  15. Call me crazy, but today more reminded me of a Spring day the way it was so cool and from bright blue sky, the sky filled in with clouds and remains that way to this hour.

    ONLY made it to a whopping 69 here. One extreme to the other.
    How about something in between??????????????????????????????

    3. Finished and saved. Thank you. Excellent read. I made the mistake of reading comments. Sometimes I find further info from knowledgeable folks. Not in those comments though.

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