Heat starts Monday. Temperatures are heading for the 90s Monday, Tuesday and Wednesday.
Humidity levels will build, which will yield heat indices in the triple digits. Dangerous heat is a possibility.
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Due to the increased temperatures, an excessive heat watch has been placed for Tuesday and Wednesday and heat index values are expected to reach up to 105 degrees. The watch will be in effect for parts of Connecticut River Valley and most of eastern Massachusetts, especially urban areas.
Early dismissals are in effect in wake of the excessive heat watch. Lawrence public schools will be releasing kids early Monday through Thursday and Haverhill public schools will release children early Tuesday and Wednesday.
A cold front will drop temperatures and the humidity by the end of the week. It appears the progress of that cold front will be significantly slower. If this slowing trend continues, Thursday could be just as hot as Tuesday or Wednesday.
Once the cold front moves through, we will get a quick taste of autumn. Temperatures Friday and Saturday will stay in the mid-70s, which is slightly below average for this time of year.
Temperatures will ramp back up through the holiday weekend. By Labor Day, temperatures will be back in the mid-80s with muggy conditions.
Unfortunately, the weather looks unsettled for the weekend. On and off showers and thunderstorms are possible.