Potomac Weather History Maryland, 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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Thu 30 Apr, 2026 Weather in Potomac

Sunrise: 06:12 AM Sunset: 08:01 PM	Moonrise: 07:22 PM Moonset: 05:18 AM	Max: 17.1 °c	Min: 8.6 °c	Avg: 12.6 °c	Precip: 1.20 mm	Max Wind: 23.4 kph

	Thu 30 0:00 am	Thu 30 3:00 am	Thu 30 6:00 am	Thu 30 9:00 am	Thu 30 12:00 pm	Thu 30 3:00 pm	Thu 30 6:00 pm	Thu 30 9:00 pm
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Temp	13.4°c	10.4°c	8.9°c	12.2°c	15.5°c	16.9°c	14.8°c	10.3°c
Wind	9.4 kmph	14.1 kmph	18.0 kmph	17.3 kmph	21.6 kmph	22.3 kmph	15.5 kmph	10.4 kmph
Precip	0.80 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	72%	83%	100%	9%	11%	17%	23%	23%
Humidity	93%	92%	87%	64%	42%	32%	39%	63%
Pressure	1007 mb	1008 mb	1010 mb	1011 mb	1011 mb	1010 mb	1012 mb	1014 mb

Potomac Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	4°C / 40°F	-3°C / 27°F	1°C / 33°F	170 hours	89.52 mm / 3.52 In	6 days	1019 mb / 31 In
February	7°C / 44°F	-1°C / 30°F	3°C / 37°F	149 hours	101.72 mm / 4.00 In	7 days	1019 mb / 31 In
March	12°C / 54°F	3°C / 37°F	7°C / 45°F	163 hours	100.44 mm / 3.95 In	7 days	1018 mb / 31 In
April	18°C / 65°F	8°C / 47°F	13°C / 55°F	176 hours	112.91 mm / 4.45 In	7 days	1016 mb / 30 In
May	23°C / 74°F	13°C / 56°F	18°C / 65°F	177 hours	140.18 mm / 5.52 In	10 days	1016 mb / 30 In
June	28°C / 83°F	18°C / 65°F	23°C / 73°F	216 hours	132.66 mm / 5.22 In	10 days	1014 mb / 30 In
July	31°C / 88°F	21°C / 70°F	26°C / 79°F	228 hours	155.70 mm / 6.13 In	11 days	1015 mb / 30 In
August	30°C / 85°F	20°C / 68°F	25°C / 76°F	212 hours	125.12 mm / 4.93 In	10 days	1016 mb / 30 In
September	26°C / 79°F	17°C / 62°F	21°C / 70°F	202 hours	141.48 mm / 5.57 In	7 days	1018 mb / 31 In
October	19°C / 67°F	11°C / 51°F	15°C / 59°F	202 hours	118.78 mm / 4.68 In	6 days	1018 mb / 31 In
November	12°C / 54°F	4°C / 40°F	8°C / 47°F	209 hours	92.58 mm / 3.64 In	5 days	1020 mb / 31 In
December	7°C / 45°F	1°C / 33°F	4°C / 39°F	174 hours	122.32 mm / 4.82 In	7 days	1020 mb / 31 In

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