7-Day Forecast 42.38°N 71.19°W (Text-Only)
NWS Forecast for: Watertown MA
Issued by: National Weather Service Norton, MA
Last Update: 2:03 pm EDT Jul 14, 2025




Tonight: A slight chance of showers and thunderstorms, then a chance of showers after 11pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 22. Southwest wind 8 to 10 km/h. Chance of precipitation is 30%.

Tuesday: A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm. Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing and hot, with a high near 32. Heat index values as high as 36. Southwest wind 5 to 10 km/h. Chance of precipitation is 20%.

Tuesday Night: Mostly clear, with a low around 22. Southwest wind 5 to 8 km/h.

Wednesday: Mostly sunny and hot, with a high near 34. Heat index values as high as 37. Calm wind becoming southwest 5 to 10 km/h in the morning.

Wednesday Night: A slight chance of showers between midnight and 2am, then a slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 24. Southwest wind around 11 km/h. Chance of precipitation is 20%.

Thursday: A chance of showers and thunderstorms, mainly after 9am. Partly sunny and hot, with a high near 33. Southwest wind 10 to 14 km/h. Chance of precipitation is 30%.

Thursday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 24. Southwest wind around 11 km/h. Chance of precipitation is 30%.

Friday: A chance of showers and thunderstorms after 3pm. Mostly sunny and hot, with a high near 32. West wind 10 to 13 km/h. Chance of precipitation is 30%.

Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 20. North wind 5 to 8 km/h. Chance of precipitation is 30%.

Saturday: Mostly sunny, with a high near 28. North wind 8 to 11 km/h becoming east in the afternoon.

Saturday Night: Partly cloudy, with a low around 19. Southeast wind 5 to 8 km/h becoming calm after midnight.

Sunday: A chance of showers. Partly sunny, with a high near 28. South wind 5 to 11 km/h. Chance of precipitation is 30%.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 19. South wind 8 to 10 km/h. Chance of precipitation is 30%.

Monday: Mostly sunny, with a high near 28. Northwest wind around 11 km/h becoming north in the afternoon.



Watertown MA
 42.38°N 71.19°W (Elev. 98 m)

Visit your local NWS office at: https://www.weather.gov/boston