Weather Merrimack long-term weather forecast

Long-term weather forecast for Merrimack for ten days.

Thursday, Jan 15

36 / 14°F

0.00 in

10 mph

34 °F	30 °F	1 am
34 °F	30 °F	7 am
36 °F	28 °F	1 pm
21 °F	14 °F	7 pm

sunrise 7:13 am
sunset 4:37 pm

HOURLY

During the day morning sleet, later morning overcast, in the evening initially overcast, later clear. The highest temperature 36 °F. Total rainfall 0.06 in. At night overcast. The lowest temperature 14 °F. Total rainfall 0.01 in.

Interactive map weather New Hampshire, USA

GPS: 42.8651; -71.4934

altitude: 170 ft
local time:

PLACES IN THE AREA

Weather forecast Merrimack, New Hampshire, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 01/15/2026
1 AM	sleet	34 °F 30 °F	0.05 in	4 fps 2 mph south-southwest	29.7 in	87 %	32 °F	100 %	0%	0%	100%	100%
7 AM	overcast	34 °F 30 °F	0.0 in	5 fps 3 mph west-northwest	29.6 in	94 %	32 °F	99 %	0%	20%	96%	80%
1 PM	overcast	36 °F 28 °F	0.0 in	15 fps 10 mph northwest	29.7 in	50 %	19 °F	100 %	0%	0%	25%	100%
7 PM	clear	21 °F 14 °F	0.00 in	13 fps 9 mph north-northwest	29.9 in	45 %	5 °F	9 %	0%	0%	9%	0%
Friday 01/16/2026
1 AM	overcast	19 °F 12 °F	0.01 in	9 fps 6 mph north-northwest	29.9 in	39 %	0 °F	100 %	0%	8%	100%	23%
7 AM	clear	14 °F 7 °F	0.0 in	10 fps 7 mph north-northwest	30.0 in	37 %	-6 °F	0 %	0%	0%	0%	0%
1 PM	clear	30 °F 23 °F	0.0 in	6 fps 4 mph northwest	30.0 in	13 %	-13 °F	0 %	0%	0%	0%	0%
7 PM	overcast	23 °F 16 °F	0.0 in	3 fps 2 mph southwest	30.2 in	24 %	-8 °F	99 %	0%	0%	0%	99%

Merrimack, New Hampshire, USA - information

State: New Hampshire, USA

GPS coordinates: 42.8651; -71.4934

Time zone: America / New York time difference in hours with time in NY is -6 hours

Population: 26 726
Altitude: 170 ft
The administrative part:

New Hampshire, Concord
Hillsborough County, Hillsborough

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Weather Merrimack, New Hampshire, USA. Weather forecast Merrimack.

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Data source

Weather forecast for Merrimack is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Merrimack

data are always in the local time

Sun and light

Jan. 15, 2026

Sunrise:	Sunset:
7:13 am	4:37 pm
Noon:	Length of day:
11:55 am	09:23
Start of civil twilight*:	End of civil twilight*:
6:41 am	5:09 pm
Start of nautical twilight*:	End of nautical twilight*:
6:07 am	5:43 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:33 am	6:17 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
01/15/2026 5:06 am	01/15/2026 1:26 pm
Next new moon:	Next full moon:
01/18/2026	02/01/2026