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Showers ending, sunshine returns for Sunday

Posted by David Epstein  August 18, 2012 01:30 PM

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Our second to last Saturday in August will go down as a cloudy damp one. Showers this afternoon will move east leaving mostly cloudy skies and cooler temperatures. Humidity will not be a factor this afternoon. Across the Cape, the showers may linger a bit longer but there will be some dry hours at the end of the day as well. Since you know today won't be a geat day to be at the beach, what about Sunday? By the way, I think this afternoon will be nice to be outside and do some yard work with clouds, cooler temperatures and showers confined to the Cape and Islands. As for tomorrow, clearing will push south and east from northern New England. Sunshine mixed with a few clouds and pleasant temperatures will greet most of us. You can watch my Twitter feed and ask me garden or weather questions on Twitter at @growingwisdom

Now
This afternoon will be a mostly cloudy one with any showers confined to the south coast, Cape Cod and the Islands. If you are headed to northern New England look for clearing conditions for the afternoon and into the evening. Temperatures will be in the 70s with the lack of sunshine and a cooler northerly flow of air. You can see the clearing beginning to move eastward in the satellite loop below. Notice there are thick white clouds in the east and partly sunny skies with puffy clouds to the west.
sat_vis_ne_loop.gif

High and dry for The Boss
Leaving your house for Foxboro the screen door may slam behind you but there won't be any thunder on the road to the stadium tonight. Overnight will be partly cloudy with temperatures in the upper 60s and lower 70s for the concert. You might want to take a light jacket if you are someone that gets cool easily. For the time of year, this is going be perfect weather for some great music. Enjoy!

Sunday
On Sunday sunshine will be prevalent across much of New England. The tough area to forecast for Sunday is from roughly Plymouth, Massachusetts and points south. The extent of the clouds is dependent on the exact placement of the cold front later tonight. With the front just to the south of Martha's Vineyard and the rest of Long Island Sound, clouds will hang tough on much of the Cape tomorrow. There is the risk for a light shower over the south coast of the Cape but any rain will be light. Temperatures Sunday will be 75F-80F with the coolest conditions at the water and over far northern New England. Check updates tomorrow on the clouds as there is the chance the clearing could move further south leaving all of Cape Cod with some sunshine especially from mid-morning into the afternoon.

Next Week
Monday will start with sunshine before clouds build back into the region. A few showers or a period of rain will fall Monday night into early Tuesday. A storm will move south of New England and the exact placement of the storm will dictate exactly how much, if any, rain we see. Thereafter, high pressure will build into New England and should keep it mild and dry for the week. Temperatures look to be in the upper 70s and lower 80s and I don't, right now, see any chance of rain for much of that time period. For many of you next week may be the last week of summer vacation before the kids head back to school. The weather looks to cooperate whether you are in the stores buying school supplies and clothes or just laying around the pool or at the beach.

Losing sunlight
We are about to flip to the other side of August and weather wise this means changes. Now, it's not as if fall is going come in on the 16th of the month, but daylight is rapidly diminishing and this will have profound affects on our weather. In northern Canada there is a small town called Resolute. Since May, Resolute has enjoyed 24 hours of daylight. In the next 15 days they will lose over 7 hours of that light and by mid-September sunrise and sunset will grow closer together for a loss of another 5 hours. The loss of the sun means temperatures will cool there as well as across the rest of the northern parts of our hemisphere. I am fascinated by Resolute. Temperatures today are in the 30s with periods of cold and snow. Although it may still warm into the 40s this month, the temperature trend is heading lower. You might ask, what the heck does that have to do with us? As colder air builds to the north it will be help to push the jet stream further south. As the jet stream moves south, our air cools, we lose humidity and we generally get a bit stormier. It takes, depending on the year, about 8 to 10 weeks for that jet stream to move more permanently into our area. Once that happens fall and even winter arrive. Last year, the jet stream rarely moved south but this winter I expect that to not be the case. More on the winter forecast in the next couple of weeks.

Gardening this week
Mid-August starts to allow gardeners to make some changes in the garden. Over the next few weeks you can begin to move perennials, reseed the lawn and dig up some shrubs. If the heat is still extreme, wait until the hot weather passes before starting your late summer and fall projects.

I'd love to hear your thoughts on this blog or any others. Please follow me on Twitter at @growingwisdom and check out my latest videos at GrowingWisdom.com

This blog is not written or edited by Boston.com or the Boston Globe.
The author is solely responsible for the content.

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About the author

David Epstein has been a professional meteorologist and horticulturalist for three decades. David spent 16 years at WCVB in Boston and currently freelances for WGME in Portland, ME. In 2006, More »
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