A Heat Advisory has been issued for Plymouth County, Massachusetts, including the town of Plymouth, for Tuesday, July 15th, 2025 through Thursday, July 17th, 2025 until 7:00 PM EDT. 

Here’s what to expect:

• Heat Index: Heat index values are expected to reach between 95 and 100 degrees Fahrenheit during the afternoon hours. The peak heat and humidity are expected on Wednesday, July 16th, and Thursday, July 17th.

Impacts: Hot temperatures and high humidity pose a risk for heat-related illnesses.

Recommendations:

• Stay hydrated by drinking plenty of fluids.
• Find cool shelter, such as an air-conditioned room.
• Limit outdoor activities, especially during the midday hours.
• Check on relatives and neighbors, particularly those who may be vulnerable.
• Never leave children or pets unattended in vehicles.

Be cautious if you work or spend time outside, and consider rescheduling strenuous activities to the early morning or evening. 

Unfortunately, detailed interactive heat index maps for Plymouth County specifically for July 16th, 2025 were not found in the provided search results. However, the available information confirms that Plymouth County is under a Heat Advisory for that period, indicating high heat index values are anticipated. You can find more information about the Heat Advisory from the National Weather Service, The Weather Channel and Weather Underground.