100!

The height of the heat and humidity will come into the Boston area for Friday. 100 degrees is likely in Boston, with a chance of breaking the all time record of 102 at Logan. Another oppressive day is likely on Saturday before cooler air comes into the area.

Alerts:

An Excessive Heat Warning is in effect for the immediate Boston area from noon to 6 PM Friday. An Excessive Heat Warning is issued when Heat index values are expected to range from 105-110.

An Heat Advisory is in effect for the rest of the area from noon to 8 PM Friday. This warning is issued when heat index values are expected to reach 100-105.

Note: Take it slow outside and drink plenty of water.

Boston, MA forecast:

Tonight: Clear with a breeze. Low 76. West wind of 10-20 MPH.

Friday: Hazy, hot and humid. High 100. West wind of 10-20 MPH. Heat index values up to 108 in the afternoon. The all time record of 102 at Logan is reachable.

Friday night: Clear with lows in the mid 70's.

Saturday: Hazy, hot and humid again with a slight risk of a PM thunderstorm. Highs in the upper 90's.

Sunday: Relief! Sunny and less humid with highs in the 80's.

Note: The all time record for Boston is 104 set in 1911. However, that was when they took readings on the Common. The record is 102 set in the 70's after they moved the site to Logan.