I-495 MA weather conditions near Chelmsford, Massachusetts
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 71°F 2025-07-14T06:51:00-04:00
Today 2025-07-14, Partly Sunny then Chance T-storms. A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Southwest wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-07-14, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday 2025-07-15, Slight Chance T-storms and Patchy Fog. A slight chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 95. Light southwest wind. Chance of precipitation is 20%.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 70. Light southwest wind.
Wednesday 2025-07-16, Hot. Sunny and hot, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night 2025-07-16, Mostly Cloudy. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
Thursday 2025-07-17, Chance T-storms. A chance of showers and thunderstorms after 11am. Partly sunny and hot, with a high near 90. Southwest wind 5 to 7 mph. Chance of precipitation is 40%.
Thursday Night 2025-07-17, Chance Showers then Partly Cloudy. A chance of showers before 10pm. Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Friday 2025-07-18, Mostly Sunny then Chance T-storms. A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. West wind 5 to 7 mph. Chance of precipitation is 40%.
Friday Night 2025-07-18, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 68. Light northwest wind. Chance of precipitation is 30%.
Saturday 2025-07-19, Mostly Sunny. Mostly sunny, with a high near 82. Light and variable wind becoming north around 5 mph in the morning.
Saturday Night 2025-07-19, Partly Cloudy. Partly cloudy, with a low around 65. Light and variable wind.
Sunday 2025-07-20, Partly Sunny. Partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Current condition: Fair 71°F 2025-07-14T06:51:00-04:00 Today 2025-07-14, Partly Sunny then Chance T-storms. A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Southwest wind 3 to 6 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight 2025-07-14, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday 2025-07-15, Slight Chance T-storms and Patchy Fog. A slight chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 7am. Otherwise, mostly cloudy, then gradually becoming sunny and hot, with a high near 90. Heat index values as high as 95. Light southwest wind. Chance of precipitation is 20%.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 70. Light southwest wind.
Wednesday 2025-07-16, Hot. Sunny and hot, with a high near 92. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night 2025-07-16, Mostly Cloudy. Mostly cloudy, with a low around 73. Southwest wind 3 to 6 mph.
Thursday 2025-07-17, Chance T-storms. A chance of showers and thunderstorms after 11am. Partly sunny and hot, with a high near 90. Southwest wind 5 to 7 mph. Chance of precipitation is 40%.Thursday Night 2025-07-17, Chance Showers then Partly Cloudy. A chance of showers before 10pm. Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Friday 2025-07-18, Mostly Sunny then Chance T-storms. A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. West wind 5 to 7 mph. Chance of precipitation is 40%.
Friday Night 2025-07-18, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 11pm. Partly cloudy, with a low around 68. Light northwest wind. Chance of precipitation is 30%.
Saturday Night 2025-07-19, Partly Cloudy. Partly cloudy, with a low around 65. Light and variable wind.
Sunday 2025-07-20, Partly Sunny. Partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.