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Boston weather: An excellent Sunday in Beantown

Forecast discussion: A strong high pressure system passing south into the Great Lakes brought Boston a great Saturday. Despite the August sunshine, southeast winds helped keep the temperatures cool. Logan Airport reported a high temperature of just 78 degrees. Providence, RI reached a high of 87, but winds remained from the north.

The high will continue to control our weather pattern for the rest of the weekend. So, if you were going to or invited to any outdoor activities on Sunday, enjoy the day. The high will continue to give us nice weather through the start of the work week. But, as we approach the middle of the week, the weather will change.

A low pressure system is expected to form near North and South Carolina over the next 24 hours. Meanwhile, a cold front now in the Northern Plains will slowly work its way into the Tri-State area by Monday night. These two systems will combine their energy by Tuesday morning. We will begin to feel the effects by the evening commute, as the models feel we could see some scattered showers. Then, moving into the overnight, the low near the Carolinas will move to the north and east.

During this time, more upper level energy will begin to move over Southern New England. So, as we go into Wednesday, there is a small chance that any embedded thunderstorms could become severe. At this time, it is still way too early to make an accurate account about severe weather. But, there could be areas that see up to 2 or even 3 inches of rain before the system moves into Maine early Thursday morning.

For the rest of the week, a high pressure ridge will give us dry weather. However, the front will bring cooler air over New England, with high temperatures moving into the weekend to only reach the upper 70’s. The best chance to see 80 degrees will be by next Saturday.

Finally, now that Iselle has passed Hawaii, the island now braces for the effects of Hurricane Julio. Julio was a Category 2 hurricane as of Saturday morning. The National Hurricane Center believes Julio will move north of the big island by Sunday morning, with wind speeds of about 75 mph. For more information on Julio, click here.

72 hour forecast:

Tonight: Partly cloudy with a low of 65.
Sunday: Mostly sunny with a high of 82. Winds will come from the south-southeast at 8-11 mph.
Sunday night: Partly cloudy with a low of 65. Winds will come from the southwest at 2-5 mph.
Monday: Mostly sunny with a high of 83.
Monday night: Partly cloudy with increasing clouds by dawn and a low of 66.
Tuesday: Cloudy with scattered showers by the evening commute. We will see a high of 80.
Tuesday night: Showers with periods of light rain and a low of 67.

Extended Forecast:
Wednesday: Showers, periods of rain, and scattered thunderstorms. The thunderstorms have the potential to be severe. Highs 73-76, lows 63-66.
Thursday: Showers end by 3 a.m. with mostly sunny skies. Highs 74-77, lows 60-63.
Friday: Mostly sunny. Highs 76-79, lows 62-65.
Saturday: Partly to mostly sunny. Highs 76-79, lows 61-64.