Boston residents are preparing for a hot and stormy Thursday, July 17th, 2025, as dangerous heat and thunderstorms threaten to disrupt travel and outdoor activities.
A heat advisory remains in effect until 7 p.m. on Thursday, as temperatures climb toward 90°F, with the heat index soaring close to 97°F. Thunderstorms are expected to develop after 2 p.m., creating potential challenges for commuters and outdoor plans.
Intense Heat Expected in Boston
The National Weather Service has issued a heat advisory for Boston, warning that high temperatures could reach 90°F, with the heat index making it feel closer to 97°F.
This extreme heat, combined with humidity, will make the afternoon uncomfortable for those outdoors. It’s important to drink plenty of water and avoid prolonged exposure to the sun.
Thunderstorms Likely After 2 PM
Severe thunderstorms are expected to hit Boston after 2 p.m. on Thursday. These storms may bring heavy rain, gusty winds, and reduced visibility, especially along major roads like I-93 and the Massachusetts Turnpike.
Motorists should exercise caution and be ready for slick roads and potential delays. Fortunately, these storms are expected to pass quickly, with rain totals expected to stay under a quarter inch, except for any stronger storms.
Staying Safe in the Heat and Storms
The weather will also bring high humidity, which could make the air feel even more uncomfortable. A light southwest breeze at 6 to 11 mph will provide some relief, but it’s unlikely to significantly ease the heat.
Residents are urged to limit outdoor activities during the hottest parts of the day, stay hydrated, and check on vulnerable neighbors, such as the elderly or those with medical conditions.
Weekend Outlook: Relief is on the Way
Relief from the intense heat will come on Friday, with temperatures dropping to the mid-80s. Friday will be mostly sunny, offering a welcome break from the heat and humidity.
The weekend will remain warm, but the humidity will decrease, making it more comfortable. With temperatures in the low 80s and little chance of rain, it’s a great time to enjoy outdoor activities.
What to Expect After the Weekend
Looking ahead to Sunday and Monday, there’s a chance of scattered showers late Sunday into early Monday, but otherwise, mostly sunny skies are expected to dominate the start of next week.
While the heat will ease slightly, summer warmth will remain, with highs in the low 80s. Temperatures will remain mild, offering a pleasant summer vibe through midweek.
Five-Day Boston Weather Forecast (July 17 – July 22, 2025)
Thursday, July 17: Showers and thunderstorms likely after 2 p.m. Hot, high near 90°F, southwest wind 6–11 mph.
Friday, July 18: Mostly sunny, high near 84°F, light winds.
Saturday, July 19: Mostly sunny, high near 82°F, low humidity.
Sunday, July 20: Partly sunny, high near 81°F, chance of showers.
Monday, July 21: Mostly sunny, high near 80°F.
Tuesday, July 22: Mostly sunny, high near 84°F.
Boston will experience hot and stormy weather on Thursday, July 17th, with thunderstorms likely affecting the afternoon commute. The high heat, combined with the potential for thunderstorms, means residents should be cautious when traveling and limit outdoor activities.
However, relief is on the way with more comfortable temperatures expected for Friday and the weekend. Stay hydrated, stay safe, and stay informed on the latest weather updates.
