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Boston weather: Cool today with clouds and some sun

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Metro Boston, North Shore and Metro West: Temperatures this Saturday morning are starting out in the upper 50s to low 60s with a range from partly to mostly cloudy skies in the metro Boston area and points north and west. Although there will be more clouds around today than there were on Friday the day will be pleasant with temperatures running cooler than normal for mid July. We will have an onshore breeze with us through the weekend that will maintain these cooler temperatures, especially along the coastal plain.

The weather map Saturday morning features high pressure centered over New England. This system will slowly slide offshore over the weekend but should maintain dry conditions locally. Meanwhile, showers and thunderstorms extend from Pennsylvania and the Ohio Valley all the way to the Gulf of Mexico. Low pressure is located in the Tennessee Valley with a frontal boundary extending across the mid-Atlantic coast to several hundred miles off Nantucket. There is also an area of showers across the North Carolina coast this morning extending into the open waters.

The showers west of us will stay west of our area as they push through New York State and extreme western New England. Low pressure will ripple along the frontal boundary from the mid-Atlantic and move southeast of Nantucket during Sunday. We mentioned over the last two days that this system could bring plenty of clouds to the area on Sunday and this is looking more likely now. It may also dampen the second half of the weekend over Cape Cod with a few showers on Sunday.

Once the low moves away later on Sunday we return to sunny skies and pleasant temperatures Monday as high pressure returns. Then, turn up the heat for Tuesday and Wednesday as some of you across the interior approach, perhaps even exceed, 90 degrees on Wednesday.

Area Outlook:
Metro Boston, North Shore and Metro West:

Saturday: Partly cloudy, intermittent periods of mostly cloudy skies. Pleasant, high temperatures near 75 degrees along the shore to 80 or so inland. Light onshore winds.

Saturday night: Becoming mainly overcast. Pleasant, low readings in the mid to upper 50s, low 60s in Boston. Winds near calm after sunset.

Sunday: Mostly cloudy with thinning clouds through the afternoon. It should stay partly sunny across the Merrimack Valley and northern Middlesex County. Highs generally in the 70s. Light northeast winds.

Sunday night: Becoming partly cloudy and it stays on the cool side with lows in the 50s to near 60 degrees.

Monday: Mostly sunny. Highs about 75 coast to 80 inland.

Monday night: Milder, with fair skies and lows in the low to mid 60s.

Tuesday: Turning much warmer, especially away from the coast. Highs in the mid to upper 80s interior, near 80 on the shore.

North Shore beach outlook:

Saturday: Partly to at times mostly cloudy. Cool, highs in the low to mid 70s. Light onshore winds. High tide around mid day. Water temperatures in the mid 60s. UV Index high at around 8. Surf only 1 to 2 feet.

Sunday: Clouds into midday, turning partly cloudy through the afternoon, especially north of Cape Ann. Highs in the low 70s. Light northeast winds.

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