National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat Continues in the South; Severe Thunderstorms in the Plains

Heat Advisories and Excessive Heat Warnings continue through Monday across much of the southern U.S. with some locations seeing the excessive heat lingering into Tuesday. Many locations from Arizona to Texas will experience high temperatures above 110 degrees with records likely. Severe thunderstorms may bring large hail and damaging winds over the central and northern Plains Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Manchester Airport (KMHT)

Lat: 42.93°NLon: 71.44°WElev: 223ft.

A Few Clouds

81°F

27°C

Humidity 57%
Wind Speed SW 6 mph
Barometer 29.69 in (1006.0 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 12 Jul 9:53 pm EDT
Extended Forecast for

Merrimack NH

  • Tonight

    Tonight: Partly cloudy, with a low around 67. West wind around 5 mph becoming calm.

    Partly Cloudy

    Low: 67 °F

  • Monday

    Monday: Showers likely, mainly after 2pm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Showers
    Likely

    High: 86 °F

  • Monday
    Night

    Monday Night: Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 2am. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Heavy Rain

    Low: 64 °F

  • Tuesday

    Tuesday: A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers after 3pm. Some of the storms could produce heavy rain. Partly sunny, with a high near 82. North wind around 5 mph. Chance of precipitation is 60%.

    Heavy Rain

    High: 82 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 62. North wind around 5 mph.

    Chance
    Showers then
    Mostly Cloudy

    Low: 62 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 78.

    Partly Sunny

    High: 78 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 59.

    Partly Cloudy

    Low: 59 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    Mostly Sunny

    High: 82 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 61.

    Mostly Cloudy

    Low: 61 °F

Detailed Forecast

Tonight
Partly cloudy, with a low around 67. West wind around 5 mph becoming calm.
Monday
Showers likely, mainly after 2pm. Partly sunny, with a high near 86. Calm wind becoming south around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 2am. Some of the storms could produce gusty winds and heavy rain. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers after 3pm. Some of the storms could produce heavy rain. Partly sunny, with a high near 82. North wind around 5 mph. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 62. North wind around 5 mph.
Wednesday
Partly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 85.
Friday Night
Mostly cloudy, with a low around 66.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 89.
Saturday Night
A 30 percent chance of showers. Partly cloudy, with a low around 67.
Sunday
Mostly sunny and hot, with a high near 92.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Merrimack NH
 42.86°N 71.49°W (Elev. 118 ft)
Last Update:
7:01 pm EDT Jul 12, 2020
Forecast Valid:
10pm EDT Jul 12, 2020-6pm EDT Jul 19, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation