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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Mon 14 Sep, 2026 Weather in Potomac

Sunrise: 06:49 AM Sunset: 07:19 PM	Moonrise: 10:44 AM Moonset: 08:53 PM	Max: 25.3 °c	Min: 18.5 °c	Avg: 22.4 °c	Precip: 0.00 mm	Max Wind: 19.1 kph

	Mon 14 0:00 am	Mon 14 3:00 am	Mon 14 6:00 am	Mon 14 9:00 am	Mon 14 12:00 pm	Mon 14 3:00 pm	Mon 14 6:00 pm	Mon 14 9:00 pm
Icon
Temp	23.7°c	22.3°c	21.1°c	21.2°c	24.5°c	25.3°c	23.3°c	19.5°c
Wind	5.8 kmph	13.0 kmph	13.7 kmph	17.3 kmph	18.0 kmph	16.9 kmph	13.3 kmph	10.8 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	5%	52%	13%	0%	2%	0%	0%	0%
Humidity	74%	79%	89%	71%	48%	36%	40%	54%
Pressure	1013 mb	1014 mb	1016 mb	1019 mb	1020 mb	1020 mb	1020 mb	1023 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 / 64°F	167 hours	138.05 mm / 5.43 In	9 days	1016 mb / 30 In
June	28°C / 83°F	18°C / 65°F	23°C / 74°F	204 hours	131.07 mm / 5.16 In	9 days	1014 mb / 30 In
July	31°C / 88°F	21°C / 70°F	26°C / 79°F	215 hours	157.09 mm / 6.18 In	10 days	1015 mb / 30 In
August	30°C / 86°F	20°C / 68°F	25°C / 76°F	201 hours	127.42 mm / 5.02 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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