Merrimack Weather History New Hampshire, United States of America

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
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Sat 06 Sep, 2025 Weather in Merrimack

Sunrise: 06:16 AM Sunset: 07:11 PM	Moonrise: 06:50 PM Moonset: 04:40 AM	Max: 26.4 °c	Min: 19.7 °c	Avg: 22.5 °c	Precip: 0.00 mm	Max Wind: 23.4 kph

	Sat 06 0:00 am	Sat 06 3:00 am	Sat 06 6:00 am	Sat 06 9:00 am	Sat 06 12:00 pm	Sat 06 3:00 pm	Sat 06 6:00 pm	Sat 06 9:00 pm
Icon
Temp	21.0°c	20.0°c	20.1°c	21.2°c	24.3°c	26.3°c	25.0°c	22.9°c
Wind	14.0 kmph	14.8 kmph	13.0 kmph	17.3 kmph	23.4 kmph	16.2 kmph	6.5 kmph	5.4 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	0%	15%	48%	77%	76%	47%	52%	87%
Humidity	86%	90%	90%	90%	82%	74%	79%	87%
Pressure	1014 mb	1014 mb	1015 mb	1015 mb	1014 mb	1013 mb	1012 mb	1013 mb

Merrimack Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	0°C / 32°F	-8°C / 18°F	-4°C / 25°F	170 hours	80.77 mm / 3.18 In	8 days	1016 mb / 30 In
February	1°C / 35°F	-7°C / 19°F	-3°C / 27°F	137 hours	86.40 mm / 3.40 In	8 days	1016 mb / 30 In
March	6°C / 43°F	-3°C / 27°F	2°C / 35°F	144 hours	96.56 mm / 3.80 In	8 days	1016 mb / 30 In
April	13°C / 55°F	3°C / 38°F	8°C / 46°F	149 hours	102.96 mm / 4.05 In	8 days	1015 mb / 30 In
May	20°C / 67°F	9°C / 48°F	14°C / 58°F	175 hours	94.72 mm / 3.73 In	7 days	1016 mb / 30 In
June	24°C / 76°F	14°C / 57°F	19°C / 66°F	183 hours	110.40 mm / 4.35 In	8 days	1013 mb / 30 In
July	28°C / 83°F	17°C / 63°F	23°C / 73°F	212 hours	127.57 mm / 5.02 In	10 days	1014 mb / 30 In
August	27°C / 81°F	16°C / 62°F	22°C / 71°F	228 hours	105.98 mm / 4.17 In	7 days	1015 mb / 30 In
September	23°C / 73°F	13°C / 55°F	18°C / 64°F	208 hours	93.71 mm / 3.69 In	6 days	1018 mb / 31 In
October	16°C / 61°F	7°C / 45°F	11°C / 52°F	179 hours	114.81 mm / 4.52 In	7 days	1016 mb / 30 In
November	9°C / 48°F	1°C / 34°F	5°C / 41°F	196 hours	91.10 mm / 3.59 In	6 days	1018 mb / 31 In
December	3°C / 38°F	-3°C / 26°F	0°C / 32°F	168 hours	125.47 mm / 4.94 In	8 days	1017 mb / 31 In

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