Boston woke up on Tuesday, June 9, to clear skies, comfortable humidity, and morning temperatures in the low 60s. A dry, sunny afternoon is on tap, with a high near 87°F and a west breeze that should keep it warm without feeling swampy.
Afternoon: Sunny, Warm, and Breezy
The National Weather Service is calling for a high near 87°F with west winds around 13 mph and dewpoints generally below the mid 50s, so humidity should stay in the comfortable range through the day. A Small Craft Advisory is in effect for the southern nearshore waters from 10 AM to 7 PM EDT, and boaters should be ready for choppy seas and gusty southwest winds. Forecast guidance also points to a warm front moving in midweek that will increase the chance of afternoon and evening showers and isolated, mainly diurnal thunderstorms from Wednesday through Friday, according to the National Weather Service Boston/Norton.
Plan Ahead For Heat Later This Week
Heat and humidity are expected to ramp up Thursday and Friday as dewpoints jump into the mid to upper 60s. That could push heat index values near 100°F in inland spots and raise the risk of heat related illness for people spending long stretches outdoors. If you have outdoor plans later in the week, try to shift activities to the cooler morning or evening hours and bring plenty of water. The City of Boston maintains a list of cooling resources and tips for hot days on its website.
Short-Term Tips
Enjoy the sunshine today, but keep an eye on updated forecasts if you have outdoor plans later this week, since storms are most likely during the afternoons and evenings from midweek on. If you are boating, follow the Small Craft Advisory this afternoon. MBTA riders should also watch for service alerts if they are heading to evening events as weather and heat start to ramp up.
