Herndon Weather History Virginia, United States of America

Weather History Form

Past date: Past date must be from 1st Jan, 2009 onwards.

Buy Weather Data

Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
Monthly Climate Data
CSV format

Find out more»

Fri 29 Aug, 2025 Weather in Herndon

Sunrise: 06:36 AM Sunset: 07:44 PM	Moonrise: 12:57 PM Moonset: 10:34 PM	Max: 25.8 °c	Min: 15.9 °c	Avg: 21.1 °c	Precip: 0.00 mm	Max Wind: 18.0 kph

	Fri 29 0:00 am	Fri 29 3:00 am	Fri 29 6:00 am	Fri 29 9:00 am	Fri 29 12:00 pm	Fri 29 3:00 pm	Fri 29 6:00 pm	Fri 29 9:00 pm
Icon
Temp	20.8°c	18.5°c	15.9°c	20.1°c	25.2°c	25.8°c	24.3°c	19.7°c
Wind	6.5 kmph	4.0 kmph	6.1 kmph	10.8 kmph	15.8 kmph	18.0 kmph	14.8 kmph	11.9 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	33%	21%	0%	25%	2%	57%	55%	8%
Humidity	59%	69%	85%	61%	52%	44%	44%	54%
Pressure	1018 mb	1017 mb	1017 mb	1018 mb	1017 mb	1016 mb	1016 mb	1017 mb

Herndon Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	5°C / 41°F	-3°C / 27°F	1°C / 33°F	173 hours	84.33 mm / 3.32 In	7 days	1019 mb / 31 In
February	7°C / 45°F	-1°C / 30°F	3°C / 37°F	151 hours	104.76 mm / 4.12 In	7 days	1019 mb / 31 In
March	12°C / 54°F	3°C / 37°F	7°C / 45°F	163 hours	95.93 mm / 3.78 In	7 days	1018 mb / 31 In
April	18°C / 65°F	8°C / 46°F	13°C / 55°F	173 hours	115.90 mm / 4.56 In	7 days	1016 mb / 30 In
May	24°C / 74°F	13°C / 56°F	18°C / 65°F	176 hours	142.02 mm / 5.59 In	10 days	1016 mb / 30 In
June	29°C / 84°F	18°C / 64°F	23°C / 73°F	214 hours	130.87 mm / 5.15 In	10 days	1014 mb / 30 In
July	32°C / 89°F	21°C / 69°F	26°C / 79°F	228 hours	141.13 mm / 5.56 In	10 days	1015 mb / 30 In
August	30°C / 86°F	20°C / 68°F	25°C / 76°F	214 hours	111.91 mm / 4.41 In	11 days	1016 mb / 30 In
September	26°C / 79°F	16°C / 61°F	21°C / 70°F	201 hours	129.13 mm / 5.08 In	8 days	1018 mb / 31 In
October	20°C / 68°F	10°C / 50°F	15°C / 58°F	201 hours	106.83 mm / 4.21 In	6 days	1018 mb / 31 In
November	13°C / 55°F	4°C / 39°F	8°C / 46°F	212 hours	87.13 mm / 3.43 In	5 days	1021 mb / 31 In
December	8°C / 46°F	1°C / 33°F	4°C / 39°F	173 hours	118.74 mm / 4.67 In	7 days	1020 mb / 31 In

Virginia

Hotels Near Herndon

Cities Near Herndon

Quick and Easy Signup for Weather API

WeatherAPI.com makes it super easy to integrate our realtime, daily, hourly and 15 min interval weather forecast data, historical weather, marine weather, bulk request, air quality data, pollen, evapotranspiration, autocomplete, time zone, astronomy and sports data into your new or existing project.

Get Started