How does NOAA issue severe storm watches for Herndon?

The National Weather Service (NWS) monitors atmospheric instability across Virginia. When convective storms, tornado potential, or flash floods are detected, automated NOAA advisories are immediately broadcasted.

What are the best outdoor weather hours in Herndon today?

Check the 24-hour hourly trend chart above to identify windows of minimal rain probability, low UV index periods, and mild temperatures.

VA, USAZIP 20170Live NOAA Station

Herndon, VA

Q: What is the current temperature and forecast in Herndon, Virginia?

The current weather in Herndon is around 58°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

Overcast•体感温度 56°F-1° wind chill

64°F/58°F

10 mph 49°

91%湿度

58°F

National Weather Service High-Resolution Rapid Refresh (HRRR)

更新时间: 10:00 AM (America/New_York)

Daily Meteorological Briefing

Herndon, VA

Synthesized forecast and practical day-planning insights

NOAA HRRR Stream

Expect mild and stable weather across Herndon, VA today.

Current temperature is 58°F (feels like 56°F), with daytime highs reaching 64°F and overnight lows around 58°F. Humidity is at 91%, with atmospheric pressure steady at 1022.5 hPa.

Overall excellent conditions for commuting and outdoor routines.

Daily Range

Δ 3° Variation

Rain Likelihood

Low (< 10%)

Solar Exposure

UV 0.35 • Moderate

24-Hour Temperature & Rain Outlook

Hourly temperature progression and precipitation probability

Temp (°F) Rain (%)

逐小时预报

Next 16 Hours

Now

64°F

28%

1 AM

64°F

18%

2 AM

63°F

29%

3 AM

63°F

53%

4 AM

62°F

53%

5 AM

61°F

64%

6 AM

60°F

55%

7 AM

59°F

76%

8 AM

59°F

65%

9 AM

58°F

43%

10 AM

58°F

53%

11 AM

58°F

31%

12 PM

58°F

38%

1 PM

58°F

47%

2 PM

58°F

61%

3 PM

58°F

69%

10天天气预报

Extended 10-day meteorological outlook

10-Day Range

Today

Sep 22

77%

58°F

64°F

Wed

Sep 23

48%

54°F

58°F

Thu

Sep 24

51°F

67°F

Fri

Sep 25

47°F

72°F

Sat

Sep 26

51°F

74°F

Sun

Sep 27

17%

54°F

76°F

Mon

Sep 28

56°F

76°F

Tue

Sep 29

59°F

79°F

Wed

Sep 30

13%

60°F

84°F

Thu

Oct 1

17%

65°F

90°F

Weather Details & Observations

Real-time atmospheric measurements and environmental indicators

Live Feed

紫外线指数Low

0.35 / 11+

No protection neededPeak 0.35

风向与风速49°

10 mph

Wind Gusts:23 mph

Conditions:Gentle breeze

Sun CycleDaylight

Sunrise06:57 AM

Sunset07:06 PM

Solar Noon:12:54 PM

湿度Humid

91%

露点:56°F

气压Steady

30.19 inHg

Trend:Stable (+0.1 hPa)

能见度Clear

8.6 mi

Haze:Minimal

Air Quality Index (AQI)Good

34US EPA Standard

Air quality is ideal for outdoor activities.

PM2.56 µg

OZONE59 µg

PM107 µg

Daily Lifestyle & Activity Index

Practical recommendations tailored to current local conditions

Outdoor SportsGood

Pleasant conditions for light outdoor activities.

Car WashRecommended

Dry conditions will keep your vehicle clean.

Pollen & AllergyLow Risk

Pollen counts remain in the comfortable range.

Driving SafetyOptimal

Dry pavement and clear visibility throughout.

Sun & Moon • Celestial Dynamics

Solar orbital arc trajectory and lunar cycle visibility

Astronomy Telemetry

Solar Day TrackDaylight Arc

Sunrise02:57 AM

Daylight ~13h

Sunset03:06 PM

Lunar Phase & StargazingNight Sky

Waxing Gibbous

80% Illumination

Stargazing condition: Optimal Visibility

Next Full Moon in ~5 daysTidal Currents Normal

常见天气问答 - Herndon, Virginia

The current weather in Herndon is around 58°F. Forecast models from NOAA and high-resolution satellite imagery provide 10-day trends and real-time precipitation radars updated every 15 minutes.

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