Waltham Weather Outlook: April 11 – April 18, 2026

A classic spring pattern kicks off with dry, seasonable weather this weekend before a significant warmup takes hold next week. Much of the workweek trends unseasonably warm, even summerlike at times, though a potential backdoor cold front could briefly knock temperatures down, especially across eastern Massachusetts. Overall, it’s a mainly dry stretch with only a few brief shower chances mixed in.