| NWS Forecast for: Waltham MA Issued by: National Weather Service Norton, MA Last Update: 10:42 pm EDT Jul 16, 2025 | |
Overnight: Mostly cloudy, with a low around 74. South wind around 6 mph. Thursday: A chance of showers and thunderstorms, mainly before 3pm. Areas of fog before 7am. Otherwise, mostly cloudy and hot, with a high near 92. Heat index values as high as 99. Southwest wind 6 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Thursday Night: A slight chance of showers and thunderstorms between 8pm and 9pm. Partly cloudy, with a low around 72. West wind around 11 mph. Chance of precipitation is 20%. Friday: Sunny, with a high near 82. Northwest wind 10 to 13 mph, with gusts as high as 24 mph. Friday Night: Mostly clear, with a low around 62. Northwest wind around 6 mph becoming calm in the evening. Saturday: Mostly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Saturday Night: A chance of showers after midnight. Mostly cloudy, with a low around 67. Southwest wind around 6 mph. Chance of precipitation is 40%. Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Southwest wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%. Sunday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Partly cloudy, with a low around 63. West wind around 5 mph becoming northwest after midnight. Chance of precipitation is 30%. Monday: Sunny, with a high near 81. North wind around 6 mph. Monday Night: Mostly clear, with a low around 61. North wind around 5 mph becoming light and variable in the evening. Tuesday: Mostly sunny, with a high near 82. Light and variable wind becoming southeast 5 to 7 mph in the morning. Tuesday Night: Mostly clear, with a low around 64. Southwest wind around 6 mph. Wednesday: Mostly sunny, with a high near 84. South wind 5 to 7 mph. | |
| Waltham MA 42.39°N 71.27°W (Elev. 197 ft) | |
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