Live Weather & Forecast
Weather in National Harbor
Maryland, United States · Real-time conditions & 3-day outlook
13°C
Feels like 12°C
55°F / Feels 53°F
Sunny
National Harbor, Maryland
🌞 Daytime
Updated: 2026-04-12 10:00
Humidity
66%
Wind
10.4 km/h SE
Wind Gust
12 km/h
Pressure
1032 mb
Visibility
16 km
UV Index
3
(Moderate)
Precipitation
0 mm
Cloud Cover
25%
Dew Point
8.2°C
Wind Degree
131°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
178.9 μg/m³
NO₂
3.8 μg/m³
O₃
125 μg/m³
SO₂
3.4 μg/m³
PM 2.5
7.2 μg/m³
PM 10
7.6 μg/m³
Weather Alerts 1
Met
· Unknown · Unknown
Monitoring message only. Please disregard.
Monitoring message only. Please disregard.
Today's Hourly Forecast
24-hour breakdown for National Harbor, Maryland
12 AM
13°
Clear
1 AM
12°
Clear
2 AM
11°
Clear
3 AM
10°
Clear
4 AM
10°
Clear
5 AM
9°
Clear
6 AM
9°
Clear
7 AM
9°
Sunny
8 AM
11°
Sunny
9 AM
13°
Sunny
10 AM
13°
Sunny
11 AM
17°
Sunny
12 PM
19°
Sunny
1 PM
20°
Sunny
2 PM
21°
Sunny
3 PM
22°
Sunny
4 PM
24°
Sunny
5 PM
22°
Sunny
6 PM
20°
Sunny
7 PM
18°
Sunny
8 PM
16°
Overcast
9 PM
15°
Partly Cloudy
10 PM
14°
Partly Cloudy
11 PM
13°
Clear
3-Day Forecast
Daily overview for National Harbor, Maryland
Today
Sunny
25°
/
8°
🌧️ 0% chance of rain
💧 Avg. humidity: 59%
💨 Max wind: 16.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:36 AM
🌇 Sunset: 07:43 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Partly Cloudy
28°
/
12°
🌧️ 0% chance of rain
💧 Avg. humidity: 67%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.6
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:44 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Sunny
32°
/
19°
🌧️ 0% chance of rain
💧 Avg. humidity: 46%
💨 Max wind: 13.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:33 AM
🌇 Sunset: 07:45 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit National Harbor
Plan your trip to National Harbor, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in National Harbor?
Current conditions in National Harbor: Sunny, temperature 13°C, humidity 66%.
What is the best time to visit National Harbor?
The best time to visit National Harbor is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in National Harbor?
National Harbor is located at approximately 38.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in National Harbor?
The wettest period in National Harbor is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to National Harbor?
For visits to National Harbor during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is National Harbor in?
National Harbor is located in United States, in the state of Maryland.
What are the public holidays in National Harbor in 2026?
View the 2026 public holidays for National Harbor on our Holidays page.
What are the GPS coordinates used for the weather forecast in National Harbor?
The weather forecast for National Harbor uses coordinates 38.7833, -77.0148.