Live Weather & Forecast
Weather in Great Falls
Virginia, United States · Real-time conditions & 3-day outlook
20°C
Feels like 20°C
68°F / Feels 68°F
Partly cloudy
Great Falls, Virginia
🌞 Daytime
Updated: 2026-04-12 13:30
Humidity
42%
Wind
16.2 km/h S
Wind Gust
18.6 km/h
Pressure
1029 mb
Visibility
16 km
UV Index
6.9
(High)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
7.4°C
Wind Degree
172°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
183.9 μg/m³
NO₂
4.5 μg/m³
O₃
132 μg/m³
SO₂
3.8 μg/m³
PM 2.5
8.3 μg/m³
PM 10
8.7 μg/m³
Today's Hourly Forecast
24-hour breakdown for Great Falls, Virginia
12 AM
12°
Clear
1 AM
11°
Clear
2 AM
10°
Clear
3 AM
9°
Clear
4 AM
9°
Clear
5 AM
9°
Clear
6 AM
8°
Clear
7 AM
9°
Sunny
8 AM
11°
Sunny
9 AM
12°
Sunny
10 AM
16°
Sunny
11 AM
19°
Sunny
12 PM
21°
Sunny
1 PM
20°
Partly cloudy
2 PM
23°
Sunny
3 PM
24°
Sunny
4 PM
25°
Sunny
5 PM
23°
Sunny
6 PM
22°
Sunny
7 PM
19°
Sunny
8 PM
17°
Overcast
9 PM
16°
Partly Cloudy
10 PM
15°
Clear
11 PM
14°
Clear
3-Day Forecast
Daily overview for Great Falls, Virginia
Today
Sunny
25°
/
8°
🌧️ 0% chance of rain
💧 Avg. humidity: 55%
💨 Max wind: 17.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:37 AM
🌇 Sunset: 07:44 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
28°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 67%
💨 Max wind: 24.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:35 AM
🌇 Sunset: 07:45 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
30°
/
18°
🌧️ 0% chance of rain
💧 Avg. humidity: 47%
💨 Max wind: 14.8 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:34 AM
🌇 Sunset: 07:46 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Great Falls
Plan your trip to Great Falls, 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 Great Falls?
Current conditions in Great Falls: Partly cloudy, temperature 20°C, humidity 42%.
What is the best time to visit Great Falls?
The best time to visit Great Falls is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Great Falls?
Great Falls is located at approximately 39° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Great Falls?
The wettest period in Great Falls is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Great Falls?
For visits to Great Falls during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Great Falls in?
Great Falls is located in United States, in the state of Virginia.
What are the public holidays in Great Falls in 2026?
View the 2026 public holidays for Great Falls on our Holidays page.
What are the GPS coordinates used for the weather forecast in Great Falls?
The weather forecast for Great Falls uses coordinates 38.9982, -77.2883.