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: Overcast 63°F 2025-07-11T01:51:00-04:00
Overnight 2025-07-11, Patchy Fog. Patchy fog. Otherwise, mostly cloudy, with a low around 63. Calm wind.
Friday 2025-07-11, Patchy Fog then Isolated T-storms. Isolated showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night 2025-07-11, Mostly Cloudy then Patchy Fog. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Light southeast wind.
Saturday 2025-07-12, Patchy Fog then Chance Showers. A chance of showers, mainly between noon and 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night 2025-07-12, Chance Showers then Mostly Cloudy. A chance of showers, mainly before 9pm. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday 2025-07-13, Partly Sunny. Partly sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Sunday Night 2025-07-13, Mostly Cloudy. Mostly cloudy, with a low around 66. Southeast wind around 6 mph becoming calm in the evening.
Monday 2025-07-14, Mostly Cloudy 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 85. South wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night 2025-07-14, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 68. Light south wind. Chance of precipitation is 30%.
Tuesday 2025-07-15, Hot. Mostly sunny and hot, with a high near 91. Light west wind.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 70. Calm wind.
Wednesday 2025-07-16, Hot. Mostly sunny and hot, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night 2025-07-16, Mostly Cloudy. Mostly cloudy, with a low around 72. Southwest wind 3 to 5 mph.
Thursday 2025-07-17, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms. Partly sunny and hot, with a high near 92. Southwest wind 3 to 8 mph. Chance of precipitation is 30%.
Current condition: Overcast 63°F 2025-07-11T01:51:00-04:00 
Overnight 2025-07-11, Patchy Fog. Patchy fog. Otherwise, mostly cloudy, with a low around 63. Calm wind.Friday 2025-07-11, Patchy Fog then Isolated T-storms. Isolated showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Friday Night 2025-07-11, Mostly Cloudy then Patchy Fog. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 66. Light southeast wind.
Saturday 2025-07-12, Patchy Fog then Chance Showers. A chance of showers, mainly between noon and 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night 2025-07-12, Chance Showers then Mostly Cloudy. A chance of showers, mainly before 9pm. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Sunday 2025-07-13, Partly Sunny. Partly sunny, with a high near 84. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Sunday Night 2025-07-13, Mostly Cloudy. Mostly cloudy, with a low around 66. Southeast wind around 6 mph becoming calm in the evening.Monday 2025-07-14, Mostly Cloudy 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 85. South wind 3 to 6 mph. Chance of precipitation is 30%.
Monday Night 2025-07-14, Chance T-storms then Partly Cloudy. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 68. Light south wind. Chance of precipitation is 30%.
Tuesday 2025-07-15, Hot. Mostly sunny and hot, with a high near 91. Light west wind.
Tuesday Night 2025-07-15, Partly Cloudy. Partly cloudy, with a low around 70. Calm wind.Thursday 2025-07-17, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms. Partly sunny and hot, with a high near 92. Southwest wind 3 to 8 mph. Chance of precipitation is 30%.