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Boston Weather: 42.0°F | A Few Clouds and Breezy

Weather

Record Heat This Weekend

By Angela Zalucha
STAFF METEOROLOGIST

Plan to hit the beach this weekend. A gradual warming trend begins Friday, with high temperatures reaching the low 80s, then climbing into the upper 80s on Saturday. The forecast Sunday calls for the high temperature to be in the mid 90s, which threatens the record high for this date of 94, set in 1929. Monday also looks like 90s, but relief comes in the form of a cold front later in the day. While no rain is expected before Monday, dew points (related to humidity) will be at uncomfortable levels.

The cause of this type of weather is a ridge of high pressure now sitting over the Ohio Valley. A ridge is an area of high pressure that does not have a closed circulation pattern. The isobars (lines of constant pressure) on the weather map look like an upside-down “U”. As this ridge moves to our east, it will draw up hot air from our southwest, because the flow around a high pressure system is clockwise (in the Northern Hemisphere). Our only hope is that a cooling sea breeze, caused by heating differences between land and ocean, blows inland.

Extended Forecast

Today: Partly cloudy. High 82 F (28 C)

Tonight: Partly cloudy. Low 65 F (18 C)

Tomorrow: Partly cloudy. High 87 F (31 C)

Tomorrow night: Partly cloudy. Low 67 F (19 C)

Sunday: Partly cloudy and hot. High 93 F (34 C)

Sunday Night: Partly cloudy. Low 67 F (19 C)

Monday: Partly cloudy with a slight chance of showers and thunderstorms. High 90 F (32 C)