Waltham, MA Weather Forecast
Middlesex County, Massachusetts
Live radar, warnings and storm tracking for Waltham, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Waltham
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Waltham, MA at a glance
Waltham is home to about 64,477 people in Middlesex County, across 13 square miles. It ranks 18th by population of 283 places in Massachusetts with a forecast here. The nearest neighbour with its own forecast is Belmont, 3 miles away.
- County
- Middlesex County
- Population
- 64,477 2023 est.
- Land area
- 13 sq mi
- People per sq mi
- 5,059
- Forecast point
- 42.3889°N, 71.2423°W
How well can the network see Waltham?
The nearest Doppler radar is KBOX (Boston, MA), to the S. Its lowest scan passes about 1,900 ft above Waltham. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Waltham show up clearly. Waltham is closer to its radar than 70% of US cities.
The closest weather station is KBED (Bedford/Hanscom Fld). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Waltham
- Belmont, MA3 mi
- Watertown Town, MA4 mi
- Weston, MA4 mi
- Lexington, MA4 mi
- Newton, MA4 mi
- Lincoln, MA4 mi
- Arlington, MA4 mi
- Wellesley, MA6 mi
Elsewhere in Massachusetts
BostonWorcesterSpringfieldCambridgeLowellBrocktonAll Massachusetts forecasts →