⭐ Support Time.now: Join our Premium Plan for an ad-free experience! ⭐ Support Us: Go Premium Ad-Free!

Weather in Herndon, United States 🇺🇸

Current Weather in Herndon

Overcast
11°C
Feels like 10°C. Overcast.
🌬️ 5 km/h NW
💧 65% Humidity
🧭 1021 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 5°C
🌅 Sunrise: 07:13 AM
🌇 Sunset: 06:40 PM
Map Overlays:

Right now Herndon is 11°C with overcast, feeling like 10°C. Expect 65% humidity and winds of about 5 km/h, and the UV index is 0 (low). The next few days in Herndon look set for about 11°C up to 24°C.

Hourly Forecast for Herndon

07:00
Partly Cloudy
11°
9%
08:00
Overcast
12°
17%
09:00
Overcast
14°
14%
10:00
Overcast
17°
12%
11:00
Overcast
19°
10%
12:00
Overcast
21°
10%
13:00
Overcast
23°
8%
14:00
Overcast
24°
9%
15:00
Overcast
24°
9%
16:00
Overcast
22°
10%
17:00
Overcast
22°
11%
18:00
Overcast
19°
11%
19:00
Overcast
17°
11%
20:00
Overcast
17°
12%
21:00
Overcast
16°
12%
22:00
Overcast
15°
12%
23:00
Overcast
14°
12%
00:00
Overcast
14°
12%
01:00
Overcast
13°
12%
02:00
Overcast
13°
13%
03:00
Overcast
13°
13%
04:00
Overcast
13°
13%
05:00
Overcast
13°
13%
06:00
Overcast
13°
13%

14-Day Forecast for Herndon

Fri, Oct 09
Overcast Overcast
24° / 11°
Sat, Oct 10
Overcast Overcast
21° / 13°
Sun, Oct 11
Light drizzle Light drizzle
17° / 14°
Mon, Oct 12
Fog Fog
19° / 16°
Tue, Oct 13
Sunny Sunny
28° / 13°
Wed, Oct 14
Sunny Sunny
20° / 10°
Thu, Oct 15
Overcast Overcast
18° / 7°
Fri, Oct 16
Sunny Sunny
26° / 13°
Sat, Oct 17
Overcast Overcast
19° / 9°
Sun, Oct 18
Partly Cloudy Partly Cloudy
15° / 7°
Mon, Oct 19
Overcast Overcast
16° / 5°
Tue, Oct 20
Overcast Overcast
17° / 5°
Wed, Oct 21
Overcast Overcast
16° / 5°
Thu, Oct 22
Cloudy Cloudy
18° / 9°

Additional Forecasts for Herndon

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 249.0 μg/m³
O₃ (Ozone) 7.0 μg/m³
NO₂ (Nitrogen Dioxide) 27.4 μg/m³
SO₂ (Sulphur Dioxide) 2.3 μg/m³
PM2.5 (Fine particles) 14.3 μg/m³
PM10 (Coarse particles) 14.4 μg/m³

Historical Weather

Weather Forecasts for Other Cities in United States

Browse Weather in United States by cities in alphabetical order:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Weather in United States ›

Best Time to Be Outside in Herndon Today

The most comfortable window in Herndon today looks like 11:00 to 14:00, when it is around 21°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in Herndon

What is the temperature in Herndon right now?

It is currently 11°C (52°F) in Herndon, overcast (feels like 10°C).

What's the weather like in Herndon right now?

Current weather in Herndon: Overcast, humidity 65%, wind 5 km/h NW.

What is today's forecast for Herndon?

Today in Herndon: high 24°C, low 11°C, overcast. Chance of rain: 11%.

What is the 7-day weather forecast for Herndon?

Daily highs and lows for Herndon:

  • 2026-10-09: 24°C / 11°C
  • 2026-10-10: 21°C / 13°C
  • 2026-10-11: 17°C / 14°C
  • 2026-10-12: 19°C / 16°C
  • 2026-10-13: 28°C / 13°C
  • 2026-10-14: 20°C / 10°C
  • 2026-10-15: 18°C / 7°C
Is it going to rain in Herndon today?

There is a 11% chance of rain in Herndon today.

What is the wind speed in Herndon right now?

Wind in Herndon is currently 5 km/h (3 mph) from the NW.

What is the UV index in Herndon right now?

The UV index in Herndon is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇺🇸 United States: New York City · Los Angeles · Brooklyn · Chicago · Houston · Queens · Phoenix · Philadelphia · Manhattan · San Antonio · San Diego · The Bronx · Dallas · Jacksonville · Austin · Fort Worth · Columbus · Indianapolis · Charlotte · San Francisco · Seattle · Denver · Washington, D.C. · Washington · Nashville · El Paso · Oklahoma City · Detroit · Boston · Portland · New South Memphis · Memphis · Las Vegas · Milwaukee · Baltimore · South Boston · Albuquerque · Tucson · Fresno · Sacramento · Omaha · Kansas City · Long Beach · Mesa · Staten Island · Atlanta · Colorado Springs · Virginia Beach · Raleigh · Miami