I-495 MA weather conditions near Chelmsford, Massachusetts
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Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 63°F 2025-07-10T23:51:00-04:00 
Overnight 2025-07-11, Areas Fog. Areas of fog. Otherwise, cloudy, with a low around 63. Calm wind.Friday 2025-07-11, Patchy Fog then Partly Sunny. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. Calm wind becoming southeast around 5 mph in the afternoon.
Friday Night 2025-07-11, Partly Cloudy then Patchy Fog. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 66. Southeast wind around 5 mph becoming calm in the evening.
Saturday 2025-07-12, Patchy Fog then Mostly Sunny. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Southeast wind 3 to 6 mph.
Saturday Night 2025-07-12, Mostly Cloudy. Mostly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm in the evening.
Sunday 2025-07-13, Partly Sunny. Partly sunny, with a high near 83. Calm wind becoming southeast around 6 mph in the afternoon.- Sunday Night 2025-07-13, Mostly Cloudy. Mostly cloudy, with a low around 65. Southeast wind around 6 mph becoming calm in the evening.
Monday 2025-07-14, Mostly Cloudy then Chance T-storms. A chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. South wind 3 to 7 mph. Chance of precipitation is 30%.
Monday Night 2025-07-14, Chance T-storms then Mostly Cloudy. A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 10pm. Mostly cloudy, with a low around 68. Light southwest wind. Chance of precipitation is 30%.
Tuesday 2025-07-15, Mostly Sunny. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 69. Light south wind.
Wednesday 2025-07-16, Hot. Sunny and hot, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Wednesday Night 2025-07-16, Partly Cloudy. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph.- Thursday 2025-07-17, Hot. Mostly sunny and hot, with a high near 93. Southwest wind 3 to 7 mph.