Critical Fire Weather Threats in the West; Storms in the High Plains; Flash Flood Risk in the Mid-Atlantic

Critical fire weather conditions persist across portions of the Northwest, Northern Rockies and Great Basin. Severe thunderstorms with large hail and a few strong gusts are possible across parts of the northern and central Plains. Heavy rainfall brings a flash flooding risk to the Mid-Atlantic. Heat builds in the Southwest into California this week. Read More >

Current conditions at

Lawrence Municipal Airport (KLWM)

Lat: 42.71°NLon: 71.13°WElev: 135ft.

Fair

78°F

26°C

Humidity 74%
Wind Speed S 9 mph
Barometer 29.95 in (1014.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 11 Aug 11:54 pm EDT
Extended Forecast for

Merrimac MA

Heat Advisory until August 12, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 12, 08:00pm

    NOW until
    8:00pm Wed

    Heat Advisory

  • Overnight

    Overnight: Increasing clouds, with a low around 73. Southwest wind around 6 mph.

    Increasing
    Clouds

    Low: 73 °F

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms.  Partly sunny, with a high near 90. West wind 3 to 6 mph.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    High: 90 °F

  • Wednesday
    Night

    Wednesday Night: A slight chance of showers and thunderstorms before 9pm.  Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Slight Chance
    T-storms then
    Partly Cloudy

    Low: 67 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.

    Mostly Sunny

    High: 88 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm  in the evening.

    Mostly Cloudy

    Low: 67 °F

  • Friday

    Friday: Partly sunny, with a high near 82. East wind 3 to 5 mph.

    Partly Sunny

    High: 82 °F

  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 63. Light and variable wind.

    Partly Cloudy

    Low: 63 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 77. East wind 5 to 7 mph.

    Mostly Sunny

    High: 77 °F

Detailed Forecast

Overnight
Increasing clouds, with a low around 73. Southwest wind around 6 mph.
Wednesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 90. West wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 67. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 88. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 67. Southeast wind around 5 mph becoming calm in the evening.
Friday
Partly sunny, with a high near 82. East wind 3 to 5 mph.
Friday Night
Partly cloudy, with a low around 63. Light and variable wind.
Saturday
Mostly sunny, with a high near 77. East wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 60. Light and variable wind.
Sunday
Partly sunny, with a high near 75. East wind around 6 mph.
Sunday Night
Mostly cloudy, with a low around 61. East wind around 5 mph becoming calm in the evening.
Monday
Partly sunny, with a high near 79. Southeast wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 64. Southwest wind around 6 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 82. West wind 3 to 5 mph. Chance of precipitation is 30%.
Click Map For Forecast
Point Forecast:
Merrimac MA
 42.84°N 71.01°W (Elev. 135 ft)
10:25 pm EDT Aug 11, 2020
12am EDT Aug 12, 2020-6pm EDT Aug 17, 2020
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database