Boston started Monday on a calm note, with mostly clear skies, temperatures near 64°F at Logan Airport, and just a light breeze. That quiet scene will not last. Clouds are set to thicken this afternoon, and there is about a 50% chance of showers after 2 p.m. Monday. Steadier rain and scattered thunderstorms are likely late Monday night into Tuesday morning. Highs today should still climb to around 74°F, but the wet pattern will slow the evening drive.
Tonight Into Tuesday Morning
Late Monday night into Tuesday morning, the National Weather Service expects steady to occasionally heavy rain, with widespread totals generally between 0.5 and 1.5 inches and isolated pockets that could top 2 inches. Rain should move into many neighborhoods after about 8 p.m. Monday and then taper from west to east on Tuesday. Patchy fog is possible overnight as the moisture piles up. A Small Craft Advisory is posted for parts of the southern coastal waters through early Tuesday, and visibility over the water may drop below a mile at times.
Commute And Local Impacts
The evening commute Monday will be wetter and slower than usual, and lingering pockets of rain could stick around into the Tuesday morning drive. Plan on extra travel time and give yourself space for sudden ponding on low-lying streets and bridge decks. Transit riders should keep an eye on the MBTA service alerts for any last-minute changes and sign up for T-Alerts if you have not already. While forecasters are not calling for widespread city flooding, brief street flooding remains possible where the heavier rain bands park overhead.
Plan Ahead
Grab the rain gear if you are heading out tonight, postpone small-boat outings while the Small Craft Advisory is active, and do not try to drive through flooded stretches of road. Conditions should gradually improve from west to east Tuesday afternoon, and a drier, warmer pattern is expected to return by midweek.
