National Weather Service

News Headlines

Map Of Recent Storm Damage Reports

Hazardous Weather Conditions

Heat Advisory until July 17, 07:00 PM EDT

Current conditions at

Lawrence Municipal Airport (KLWM)

Lat: 42.71°NLon: 71.13°WElev: 135ft.

A Few Clouds

89°F

32°C

Humidity	52%
Wind Speed	SW 7 mph
Barometer	30.01 in (1016.0 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	94°F (34°C)
Last update	15 Jul 6:54 pm EDT

More Information:

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

Extended Forecast for

Merrimac MA

Heat Advisory July 15, 07:55pm until July 17, 07:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 15, 07:55pm until July 17, 07:00pm
NOW until 7:00pm Thu
Heat Advisory
Tonight
Low: 68 °F
Isolated
T-storms then
Mostly Clear
Wednesday
High: 92 °F
Hot
Wednesday Night
Low: 74 °F
Partly Cloudy
then Slight
Chance
Showers
Thursday
High: 89 °F
Showers
Likely
Thursday Night
Low: 73 °F
Chance
T-storms then
Partly Cloudy
Friday
High: 84 °F
Sunny
Friday Night
Low: 60 °F
Mostly Clear
Saturday
High: 81 °F
Mostly Sunny

Detailed Forecast

Tonight

Isolated showers and thunderstorms before 8pm. Mostly clear, with a low around 68. Light southwest wind. Chance of precipitation is 20%.

Wednesday

Sunny and hot, with a high near 92. Heat index values as high as 99. Calm wind becoming south around 5 mph in the afternoon.

Wednesday Night

A slight chance of showers after 3am. Increasing clouds, with a low around 74. Southwest wind around 5 mph. Chance of precipitation is 20%.

Thursday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 3pm, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 89. Heat index values as high as 97. Southwest wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 73. Southwest wind around 6 mph. Chance of precipitation is 40%.

Friday

Sunny, with a high near 84. Northwest wind around 6 mph.

Friday Night

Mostly clear, with a low around 60. Light north wind.

Saturday

Mostly sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.

Saturday Night

Partly cloudy, with a low around 63. South wind 3 to 5 mph.

Sunday

A chance of showers after 9am. Partly sunny, with a high near 83. South wind 3 to 6 mph. Chance of precipitation is 40%.

Sunday Night

A chance of showers. Mostly cloudy, with a low around 64. South wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 40%.

Monday

Mostly sunny, with a high near 81. North wind around 6 mph.

Monday Night

Mostly clear, with a low around 61. Light northwest wind.

Tuesday

Sunny, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.