| NWS Forecast for: Waltham MA Issued by: National Weather Service Norton, MA Last Update: 3:59 pm EDT Jul 13, 2025 |  |
| Tonight: Patchy fog after 2am. Otherwise, increasing clouds, with a low around 68. South wind 3 to 8 mph. Monday: A chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 86. South wind 3 to 7 mph. Chance of precipitation is 30%. Monday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers. Mostly cloudy, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Tuesday: A slight chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 89. Heat index values as high as 95. Southwest wind 3 to 6 mph. Chance of precipitation is 20%. Tuesday Night: Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Wednesday: Mostly sunny and hot, with a high near 92. Southwest wind 3 to 6 mph. Wednesday Night: Mostly cloudy, with a low around 74. Southwest wind around 6 mph. Thursday: A chance of showers and thunderstorms after 3pm. Partly sunny and hot, with a high near 92. Southwest wind 6 to 9 mph. Chance of precipitation is 30%. Thursday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 75. Southwest wind 5 to 7 mph. Chance of precipitation is 30%. Friday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. West wind 6 to 8 mph. Chance of precipitation is 30%. Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 70. West wind 3 to 5 mph. Chance of precipitation is 30%. Saturday: A chance of showers. Partly sunny, with a high near 85. North wind 5 to 7 mph becoming east in the afternoon. Chance of precipitation is 30%. Saturday Night: Mostly cloudy, with a low around 67. Northwest wind 3 to 5 mph. Sunday: Partly sunny, with a high near 83. Light and variable wind becoming east 5 to 7 mph in the morning. | |
| Waltham MA 42.38°N 71.22°W (Elev. 49 ft) | |
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