Portsmouth 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.
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Sat 18 Apr, 2026 Weather in Portsmouth

Sunrise: 05:56 AM Sunset: 07:30 PM	Moonrise: 06:09 AM Moonset: 09:34 PM	Max: 12.4 °c	Min: 5.2 °c	Avg: 8.3 °c	Precip: 0.00 mm	Max Wind: 18.4 kph

	Sat 18 0:00 am	Sat 18 3:00 am	Sat 18 6:00 am	Sat 18 9:00 am	Sat 18 12:00 pm	Sat 18 3:00 pm	Sat 18 6:00 pm	Sat 18 9:00 pm
Icon
Temp	12.4°c	9.8°c	8.2°c	8.9°c	9.0°c	7.4°c	5.7°c	5.2°c
Wind	7.2 kmph	12.6 kmph	12.2 kmph	16.2 kmph	16.9 kmph	18.0 kmph	11.5 kmph	5.8 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	65%	100%	100%	87%	80%	92%	100%	100%
Humidity	92%	97%	97%	90%	83%	86%	93%	96%
Pressure	1017 mb	1017 mb	1019 mb	1020 mb	1019 mb	1018 mb	1017 mb	1016 mb

Portsmouth Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	0°C / 33°F	-6°C / 21°F	-3°C / 27°F	178 hours	107.50 mm / 4.23 In	8 days	1015 mb / 30 In
February	1°C / 35°F	-6°C / 22°F	-2°C / 28°F	152 hours	108.74 mm / 4.28 In	7 days	1016 mb / 30 In
March	6°C / 42°F	-2°C / 29°F	2°C / 35°F	150 hours	131.46 mm / 5.18 In	8 days	1016 mb / 30 In
April	11°C / 52°F	4°C / 39°F	7°C / 45°F	152 hours	128.08 mm / 5.04 In	8 days	1015 mb / 30 In
May	17°C / 63°F	9°C / 48°F	13°C / 55°F	178 hours	99.44 mm / 3.91 In	7 days	1016 mb / 30 In
June	22°C / 71°F	14°C / 57°F	18°C / 64°F	190 hours	117.57 mm / 4.63 In	9 days	1013 mb / 30 In
July	26°C / 78°F	18°C / 64°F	22°C / 71°F	222 hours	121.47 mm / 4.78 In	9 days	1014 mb / 30 In
August	25°C / 77°F	17°C / 63°F	21°C / 70°F	235 hours	100.36 mm / 3.95 In	7 days	1015 mb / 30 In
September	21°C / 71°F	14°C / 56°F	17°C / 63°F	213 hours	105.48 mm / 4.15 In	6 days	1018 mb / 31 In
October	15°C / 60°F	8°C / 47°F	12°C / 53°F	174 hours	133.63 mm / 5.26 In	7 days	1017 mb / 31 In
November	9°C / 48°F	2°C / 36°F	6°C / 42°F	198 hours	107.59 mm / 4.24 In	6 days	1017 mb / 31 In
December	4°C / 39°F	-2°C / 28°F	1°C / 33°F	167 hours	154.76 mm / 6.09 In	8 days	1017 mb / 31 In

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