Maine is facing one of the most intense heat events of 2025, with dangerously high temperatures and humidity levels set to push the heat index above 105°F on Tuesday. This heatwave will particularly impact areas south of Katahdin, including Bangor and Dover-Foxcroft.
Heat Warning in Maine
The National Weather Service in Caribou has issued an Extreme Heat Warning for Southern Penobscot, Interior Hancock, and Central Washington Counties, where the heat index could soar to dangerous levels.
A Heat Advisory is also in effect for a wider region, covering Northern and Coastal Washington, Southeastern Aroostook, and parts of Penobscot and Piscataquis counties. In places like Millinocket, Lincoln, and Topsfield, the heat index could climb to between 106°F and 109°F by the afternoon.
The combination of high humidity and heat is particularly concerning as it increases the risk of heat-related illnesses like heat exhaustion and heat stroke. This warning marks one of the most intense heat waves to hit Maine this year, and residents are urged to take immediate precautions to protect themselves.
Health and Safety Tips
With the high temperatures, it’s important to limit outdoor activities, especially during the hottest parts of the day. Staying hydrated is crucial to prevent dehydration, and it’s advisable to seek air-conditioned or shaded areas when possible.
Vulnerable individuals, such as the elderly, children, and those with chronic illnesses, should be checked on regularly to ensure their safety in these extreme conditions.
Overnight lows will remain in the 70s in inland areas, providing little relief from the heat. This will make it difficult for temperatures to cool down overnight, leading to oppressive conditions through early Wednesday.
Thunderstorm Risks and Relief
Later in the day, scattered thunderstorms with gusty winds are expected as a cold front moves through the region. While these storms may provide some relief by bringing cooler, drier air into Maine by Wednesday, it’s important to stay alert for any changes in conditions. Updates will be issued if the situation worsens.
Maine is facing a dangerous heat event on Tuesday, with temperatures and humidity levels pushing the heat index above 105°F in many areas south of Katahdin.
Residents are urged to limit outdoor activity, stay hydrated, and take necessary precautions, especially for vulnerable populations. Thunderstorms in the evening may bring relief, but conditions will remain oppressive until cooler air arrives on Wednesday.
