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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Wed 04 Mar, 2026 Weather in Merrimack

Sunrise: 06:17 AM Sunset: 05:39 PM	Moonrise: 07:14 PM Moonset: 06:40 AM	Max: 8.9 °c	Min: -2.1 °c	Avg: 2.6 °c	Precip: 22.60 mm	Max Wind: 11.9 kph

	Wed 04 0:00 am	Wed 04 3:00 am	Wed 04 6:00 am	Wed 04 9:00 am	Wed 04 12:00 pm	Wed 04 3:00 pm	Wed 04 6:00 pm	Wed 04 9:00 pm
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Temp	-0.3°c	-0.9°c	-1.8°c	0.9°c	6.2°c	8.8°c	6.4°c	1.5°c
Wind	2.9 kmph	4.7 kmph	5.8 kmph	10.8 kmph	7.9 kmph	8.3 kmph	2.9 kmph	4.0 kmph
Precip	5.30 mm	1.60 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	100%	100%	52%	2%	0%	6%	22%	60%
Humidity	97%	95%	92%	85%	76%	75%	85%	96%
Pressure	1020 mb	1019 mb	1021 mb	1023 mb	1024 mb	1024 mb	1024 mb	1026 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	171 hours	82.70 mm / 3.26 In	7 days	1016 mb / 30 In
February	1°C / 34°F	-7°C / 19°F	-3°C / 27°F	138 hours	91.46 mm / 3.60 In	7 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	206 hours	106.12 mm / 4.18 In	6 days	1018 mb / 31 In
October	16°C / 61°F	7°C / 45°F	11°C / 52°F	179 hours	121.72 mm / 4.79 In	6 days	1017 mb / 30 In
November	9°C / 48°F	1°C / 34°F	5°C / 41°F	196 hours	91.04 mm / 3.58 In	6 days	1018 mb / 31 In
December	3°C / 37°F	-3°C / 26°F	0°C / 31°F	169 hours	133.32 mm / 5.25 In	8 days	1017 mb / 31 In

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