Tuesday September 10, 2013 | 10:53 AM
Posted by David Epstein

Big changes in the temperature will occur the rest of the week as our fall-like air is replaced by the feeling of mid-summer before returning back to fall-like conditions for the weekend.

Along the way there will be a period of showers and thunderstorms.  Right now an area of storms and showers is pushing into southern Maine. 

This first batch of rain is moving rapidly east and will be offshore during the early afternoon.   Some heavier showers and storms will occur with this first round of rain.  Temperatures will stay in the 70s this afternoon and you will notice a marked increase in the humidity.

Tonight will be a summer-like night with readings staying in the 60s for much of the night and a tropical feeling to the air.   This will set up a very warm to hot day Wednesday.  Although the record for Wednesday isn't in jeopardy, it's still going to be one of the warmest days we have had since mid-July.   We made it through August without a single 90 degree day.  That was the first time several years that has happened.  There is from year to year at least one day in September that hits 90F and my feeling is, if it's going to happen this month, it's going to be tomorrow.   When you factor in the humidity with the heat, tomorrow will feel close to 100F in the afternoon.

The tropical air remains in place Wednesday night and Thursday.  Southern Maine could stay in the lower 70s all night Wednesday and will get back into the 80s Thursday. There will be more clouds Thursday and a likelihood of showers and storms later in the day.  The storms on Thursday could be quite intense and I will have to keep an eye to see if some end up severe.

Friday will clear as drier air pushes the humidity and heat out to sea.  This will set up a nice fall-like weekend with cooler conditions similar to Sunday.

The tropics, as expected, has become a bit more active. There is still plenty of time to see a very active season and we shouldn't be lulled into a false sense of complacency just because this has been a quiet season thus far.   Humberto is a now a tropical storm and is forecast to become a hurricane later today.  Right now it appears there is no threat to land from this storm, but I will be watching the tropics closely for any changes.   There is also another tropical storm names Gustav in the Atlantic, this storm is not forecast to strengthen much as it moves northward staying off the mainland of the United States.

Gardening this week Not that long ago I was fortunate to take a trip to Ecuador. The country is very beautiful and known for a wonderful growing climate. In this video I show you some of my visit to a farm that grows roses for markets all over the world. I'll be updating the details of the weather on Twitter at @growingwisdom Please follow me there. Feel free to comment or ask questions too.

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About the Author

David Epstein has been a meteorologist for more than 25 years. He spent 16 years in Boston and currently freelances at WGME13 in Portland.

In 2006, David founded GrowingWisdom.com, a business producing educational and marketing videos for the green industry. He currently is a professor at Framingham State College, teaches Jan Plan at Colby College and owns Bloomscapes Inc., a landscape design business.

David authored "Gardens Of New England" and his work has been published in Grolier's Science Annual for 10 years. He lives in South Natick, Mass., and has a summer home in Harpswell.

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