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Chantilly, United States Snapshot 2026
Where is Chantilly?
Chantilly, United States
- Continent
- Americas
- Country
- United States
- City
- Chantilly
- Population
- 23K
- Elevation
- 98 m
- Coordinates
- 38.89°, -77.43°
Chantilly is a city in United States with a population of approximately 23K. Average temperatures range from -1°C (29°F) in January to 32°C (89°F) in July. The best time to visit is April, May, June, September, October.
Time in Chantilly right now
Open full time & time zone page 21:56 56
Monday, June 15, 2026
IANA time zone
America/New_York
Daylight saving
DST in effect
EST / EDT
Next DST change
November 1
backward -1h
Live weather in Chantilly
Daylight in Chantilly today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 53m
Climate normals for Chantilly
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Fair April best
Good May best
Excellent June best
Excellent July
Fair August
Good September best
Excellent October best
Excellent November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 6°C / -1°C | 2°C / -6°C | 9days (83 mm) Wet | 6.2h Fair | 68% Muggy | 2.7 Moderate | Poor | View Details |
| February | 9°C / 1°C | 6°C / -3°C | 10days (88 mm) Wet | 6.7h Fair | 68% Muggy | 3.5 Moderate | Poor | View Details |
| March | 14°C / 4°C | 11°C / 0°C | 10days (76 mm) Wet | 8.3h Good | 64% Muggy | 5 Moderate | Fair | View Details |
| April best | 19°C / 9°C | 18°C / 6°C | 10days (84 mm) Wet | 9.1h Good | 65% Muggy | 5.8 High | Good | View Details |
| May best | 23°C / 14°C | 24°C / 13°C | 14days (121 mm) Wet | 9.2h Good | 73% Muggy | 6.5 High | Excellent | View Details |
| June best | 29°C / 19°C | 31°C / 20°C | 11days (100 mm) Wet | 11.3h Excellent | 67% Muggy | 7.3 Very High | Excellent | View Details |
| July | 32°C / 22°C | 35°C / 25°C | 14days (129 mm) Wet | 11.7h Excellent | 69% Muggy | 7.6 Very High | Fair | View Details |
| August | 30°C / 21°C | 33°C / 23°C | 13days (101 mm) Wet | 10.5h Excellent | 73% Muggy | 6.9 High | Good | View Details |
| September best | 26°C / 18°C | 28°C / 18°C | 11days (105 mm) Wet | 8.5h Good | 73% Muggy | 5.2 High | Excellent | View Details |
| October best | 20°C / 12°C | 20°C / 10°C | 8days (73 mm) Wet | 7.9h Good | 72% Muggy | 4.5 Moderate | Excellent | View Details |
| November | 14°C / 5°C | 11°C / 2°C | 8days (73 mm) Wet | 7.2h Good | 67% Muggy | 3.1 Moderate | Fair | View Details |
| December | 8°C / 1°C | 5°C / -3°C | 9days (94 mm) Wet | 5.9h Fair | 70% Muggy | 2.3 Moderate | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 6°C / -1°C . Feb: 9°C / 1°C . Mar: 14°C / 4°C . Apr: 19°C / 9°C . May: 23°C / 14°C . Jun: 29°C / 19°C . Jul: 32°C / 22°C . Aug: 30°C / 21°C . Sep: 26°C / 18°C . Oct: 20°C / 12°C . Nov: 14°C / 5°C . Dec: 8°C / 1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 83 mm. Feb: 88 mm. Mar: 76 mm. Apr: 84 mm. May: 121 mm. Jun: 100 mm. Jul: 129 mm. Aug: 101 mm. Sep: 105 mm. Oct: 73 mm. Nov: 73 mm. Dec: 94 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 68%. Feb: 68%. Mar: 64%. Apr: 65%. May: 73%. Jun: 67%. Jul: 69%. Aug: 73%. Sep: 73%. Oct: 72%. Nov: 67%. Dec: 70%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 17 km/h . Feb: 17 km/h . Mar: 18 km/h . Apr: 18 km/h . May: 15 km/h . Jun: 14 km/h . Jul: 12 km/h . Aug: 11 km/h . Sep: 13 km/h . Oct: 15 km/h . Nov: 16 km/h . Dec: 16 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 8. Aug: UV 7. Sep: UV 5. Oct: UV 5. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Chantilly has a population of approximately 23K.
The best months to visit Chantilly are April, May, June, September, October, when temperatures are pleasant and rainfall is lower.
Chantilly receives approximately 1127mm of rainfall annually across 127 rainy days.
Chantilly is located in United States, in the Americas region.
Chantilly sits at an elevation of 98 m (322 ft) above sea level.