National Weather Service

Hazardous Weather Conditions

Current conditions at

Laurence G Hanscom Field Airport (KBED)

Lat: 42.47°NLon: 71.29°WElev: 132ft.

Fair

95°F

35°C

Humidity	49%
Wind Speed	SW 7 mph
Barometer	30.19 in (1023.2 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	105°F (41°C)
Last update	20 Jun 1:51 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Chelmsford MA

Severe T-storm Watch until June 20, 08:00pm

Heat Advisory June 20, 01:59pm until June 20, 07:00pm

Click here for hazard details and duration

Severe T-storm Watch

Heat Advisory

Severe T-storm Watch until June 20, 08:00pm
Heat Advisory June 20, 01:59pm until June 20, 07:00pm
NOW: Multiple hazards in effect
Click HERE for Details
This Afternoon
High: 98 °F
Hot
Tonight
Low: 72 °F
Severe
Thunderstorms
and Patchy
Fog
Friday
High: 85 °F
Slight Chance
Showers then
Showers
Likely
Friday Night
Low: 65 °F
Chance
Showers and
Patchy Fog
Saturday
High: 75 °F
Chance
Showers
Saturday Night
Low: 62 °F
Showers
Likely
Sunday
High: 88 °F
Chance
Showers
Sunday Night
Low: 69 °F
Showers
Likely

Detailed Forecast

This Afternoon

Partly sunny and hot, with a high near 98. Heat index values as high as 105. Southwest wind around 9 mph.

Tonight

Scattered showers and thunderstorms before 11pm, then a slight chance of showers. Some of the storms could be severe. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Scattered showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then scattered showers and thunderstorms after 4pm. Partly sunny, with a high near 85. Light and variable wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers after midnight. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday

A chance of showers. Cloudy, with a high near 75. East wind 3 to 6 mph. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms before 10pm, then showers likely and possibly a thunderstorm between 10pm and midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 62. East wind 3 to 5 mph. Chance of precipitation is 60%.

Sunday

A chance of showers. Mostly cloudy, with a high near 88. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Sunday Night

Showers likely, mainly before 4am. Mostly cloudy, with a low around 69. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Monday

Showers likely, mainly between 8am and 5pm. Partly sunny, with a high near 85. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

Monday Night

A chance of showers before 10pm. Partly cloudy, with a low around 64. Northwest wind 6 to 8 mph. Chance of precipitation is 40%.

Tuesday

Sunny, with a high near 86. Northwest wind around 6 mph.

Tuesday Night

Partly cloudy, with a low around 64. Southwest wind around 5 mph.

Wednesday

Mostly sunny, with a high near 89. Southwest wind 6 to 9 mph.