Good morning, While today will start in relative comfort, heat and humidity will be on the increase today and peak on Saturday and Sunday. A cold front then brings relief from the high temperatures Monday and the high humidity Tuesday. Heat index values will approach or even exceed 110 degrees in some locations Saturday and Sunday afternoons. This is dangerous heat and humidity and relatively rare for this part of the country. We have attached an image of the Heat Headlines issued along with the maximum heat index values anticipated Today, Saturday and Sunday. It is not only heat during the day, but the lack of cooling at night which will be a problem. Fortunately, much cooler air arrives Monday. *Headlines ...* - Excessive Heat Warnings continue for most of Massachusetts, Connecticut and Rhode Island. - Heat Advisories continue for Berkshire County, Cape Cod, and Martha's Vineyard. *Changes ... *None. *What ...* - Excessive heat and humidity begins this afternoon and peaks Saturday and Sunday afternoons. - Heat Index Values between 95 and 100 degrees this afternoon. - Heat Index Values between 107 and 112 degrees on both Saturday and Sunday afternoons for most of the region with values between 96 and 102 degrees across Berkshire county, Cape Cod and Martha's Vineyard. *Where ...* - Heat headlines in effect for all of southern New England except Nantucket beginning this afternoon and continuing through the weekend. *When ... * - This afternoon through early Sunday evening. - Much cooler and less humid Monday. If you have any questions or would like more information, don't hesitate to contact us via this email address, on NWSChat <https://nwschat.weather.gov/>, or at the following: National Weather Service Boston/Norton, MA 46 Commerce Way Norton, MA 02766 508.622.3280Websit <http://www.weather.gov/boston> | Facebook <http://www.facebook.com/NWSBoston> | Twitter <http://www.twitter.com/NWSBoston>
