Alton Weather History New Hampshire, United States of America

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Daily and hourly data from 1 Jan 2009 onwards.
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Thu 13 Aug, 2026 Weather in Alton

Sunrise: 05:47 AM Sunset: 07:51 PM	Moonrise: 06:27 AM Moonset: 08:18 PM	Max: 26.0 °c	Min: 15.4 °c	Avg: 20.5 °c	Precip: 6.00 mm	Max Wind: 16.9 kph

	Thu 13 0:00 am	Thu 13 3:00 am	Thu 13 6:00 am	Thu 13 9:00 am	Thu 13 12:00 pm	Thu 13 3:00 pm	Thu 13 6:00 pm	Thu 13 9:00 pm
Icon
Temp	17.6°c	17.0°c	15.4°c	18.7°c	23.2°c	26.0°c	25.8°c	19.9°c
Wind	3.6 kmph	5.8 kmph	4.3 kmph	5.0 kmph	11.2 kmph	16.9 kmph	8.6 kmph	7.2 kmph
Precip	0.00 mm	0.00 mm	1.20 mm	0.00 mm	0.10 mm	0.10 mm	0.00 mm	0.00 mm
Cloud	0%	0%	73%	88%	71%	72%	0%	0%
Humidity	88%	85%	84%	86%	69%	49%	46%	60%
Pressure	1008 mb	1008 mb	1009 mb	1009 mb	1008 mb	1008 mb	1009 mb	1012 mb

Alton Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	-2°C / 28°F	-10°C / 14°F	-6°C / 21°F	164 hours	93.26 mm / 3.67 In	9 days	1015 mb / 30 In
February	-1°C / 30°F	-9°C / 15°F	-5°C / 23°F	139 hours	94.69 mm / 3.73 In	7 days	1016 mb / 30 In
March	4°C / 39°F	-5°C / 23°F	-1°C / 31°F	141 hours	114.69 mm / 4.52 In	8 days	1016 mb / 30 In
April	11°C / 51°F	1°C / 34°F	6°C / 42°F	140 hours	132.22 mm / 5.21 In	8 days	1015 mb / 30 In
May	18°C / 64°F	7°C / 45°F	12°C / 54°F	156 hours	102.49 mm / 4.04 In	7 days	1015 mb / 30 In
June	23°C / 73°F	12°C / 54°F	17°C / 63°F	168 hours	136.29 mm / 5.37 In	9 days	1013 mb / 30 In
July	26°C / 80°F	16°C / 61°F	21°C / 70°F	200 hours	114.28 mm / 4.50 In	8 days	1014 mb / 30 In
August	25°C / 78°F	15°C / 59°F	20°C / 68°F	221 hours	97.54 mm / 3.84 In	7 days	1015 mb / 30 In
September	21°C / 71°F	11°C / 52°F	16°C / 61°F	204 hours	95.27 mm / 3.75 In	5 days	1018 mb / 31 In
October	14°C / 57°F	6°C / 42°F	10°C / 49°F	167 hours	130.79 mm / 5.15 In	7 days	1017 mb / 31 In
November	7°C / 44°F	-1°C / 31°F	3°C / 37°F	188 hours	105.42 mm / 4.15 In	7 days	1017 mb / 31 In
December	1°C / 34°F	-5°C / 22°F	-2°C / 28°F	161 hours	146.89 mm / 5.78 In	8 days	1017 mb / 31 In

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