Currently: 77 °F. Partly sunny. (Weather station: Reagan National Airport, USA). See more current weatherPast Weather in Chantilly — Graph
°F
Time
Wind
(mph)
(mph)
Temp
(°F)
(°F)
70
73
76
79
82
85
88
91
94
Sat, Jul 5
Lo:72
6 am
Hi:84
5
Lo:84
12 pm
Hi:88
9
Lo:75
6 pm
Hi:84
10
Sun, Jul 6
Lo:72
12 am
Hi:75
5
Lo:72
6 am
Hi:84
4
Lo:82
12 pm
Hi:88
10
Lo:79
6 pm
Hi:84
7
Mon, Jul 7
Lo:77
12 am
Hi:79
4
Lo:77
6 am
Hi:84
7
Lo:82
12 pm
Hi:90
6
Lo:82
6 pm
Hi:88
7
Tue, Jul 8
Lo:75
12 am
Hi:82
6
Lo:79
6 am
Hi:90
7
Lo:81
12 pm
Hi:95
14
Lo:77
6 pm
Hi:81
7
Wed, Jul 9
Lo:75
12 am
Hi:77
6
Lo:75
6 am
Hi:88
4
Lo:86
12 pm
Hi:90
11
Lo:73
6 pm
Hi:86
9
Thu, Jul 10
Lo:73
12 am
Hi:75
7
Lo:75
6 am
Hi:79
6
Lo:79
12 pm
Hi:84
7
Lo:77
6 pm
Hi:82
6
Fri, Jul 11
Lo:75
12 am
Hi:77
1
Lo:75
6 am
Hi:84
4
Lo:88
12 pm
Hi:90
6
Lo:81
6 pm
Hi:86
7
Sat, Jul 12
Lo:77
12 am
Hi:81
3
Lo:79
6 am
Hi:88
4
Lo:84
12 pm
Hi:90
11
Lo:79
6 pm
Hi:84
7
Sun, Jul 13
Lo:77
12 am
Hi:79
5
Lo:79
6 am
Hi:84
6
Lo:81
12 pm
Hi:86
11
Lo:79
6 pm
Hi:84
8
Mon, Jul 14
Lo:77
12 am
Hi:79
7
Lo:77
6 am
Hi:86
8
Lo:81
12 pm
Hi:88
12
Lo:75
6 pm
Hi:81
7
Tue, Jul 15
Lo:75
12 am
Hi:75
1
Lo:75
6 am
Hi:82
4
Lo:84
12 pm
Hi:90
3
Lo:81
6 pm
Hi:86
10
Wed, Jul 16
Lo:75
12 am
Hi:79
7
Lo:77
6 am
Hi:82
8
Lo:84
12 pm
Hi:90
11
Lo:75
6 pm
Hi:86
9
Thu, Jul 17
Lo:75
12 am
Hi:77
7
Lo:77
6 am
Hi:88
9
Lo:91
12 pm
Hi:93
14
Lo:86
6 pm
Hi:91
11
Fri, Jul 18
Lo:81
12 am
Hi:84
7
Lo:81
6 am
Hi:86
6
Lo:86
12 pm
Hi:88
6
Lo:77
6 pm
Hi:84
7
Sat, Jul 19
Lo:77
12 am
Hi:79
2
Lo:79
6 am
Hi:82
2
Lo:82
12 pm
Hi:88
6
Lo:77
6 pm
Hi:81
7
Sun, Jul 20
Lo:75
12 am
Hi:77
4
Lo:77
6 am
Hi:77
4
Saturday, July 5, 2025, 6:00 am — 12:00 pm
84 / 72 °F
Passing clouds.
Humidity: 64%
Barometer: 30.16 "Hg
SSE
Wind: 4.971 mph
Chantilly Temperature Yesterday
Maximum temperature yesterday: 88 °F (at 2:52 pm)
Minimum temperature yesterday: 77 °F (at 1:35 am)
Average temperature yesterday: 80 °F
High & Low Weather Summary for the Past Weeks
| Temperature | Humidity | Pressure | |
|---|---|---|---|
| High | 95 °F (Jul 8, 3:52 pm) | 94% (Jul 7, 6:06 am) | 30.17 "Hg (Jul 7, 6:06 am) |
| Low | 71 °F (Jul 5, 6:52 am) | 43% (Jul 5, 4:52 pm) | 29.87 "Hg (Jul 20, 3:52 am) |
| Average | 81 °F | 77% | 30.00 "Hg |
| * Reported Jul 5 6:52 am — Jul 20 6:52 am, Chantilly. Weather by CustomWeather, © 2025 | |||
Note: Actual official high and low records may vary slightly from our data, if they occured in-between our weather recording intervals... More about our weather records
Chantilly Weather History for the Previous 24 Hours
Scroll right to see more
| Conditions | Comfort | |||||||
|---|---|---|---|---|---|---|---|---|
| Time | Temp | Weather | Wind | Humidity | Barometer | Visibility | ||
| 6:52 am Sun, Jul 20 | | 77 °F | Partly sunny. | 5 mph | ↑ | 88% | 29.87 "Hg | 10 mi |
| 5:52 am |  | 76 °F | Mostly cloudy. | 6 mph | ↑ | 91% | 29.87 "Hg | 10 mi |
| 5:39 am |  | 76 °F | Passing clouds. | 6 mph | ↑ | 91% | 29.87 "Hg | 10 mi |
| 4:52 am |  | 76 °F | Partly cloudy. | 6 mph | ↑ | 91% | 29.87 "Hg | 10 mi |
| 3:52 am | | 77 °F | Partly cloudy. | 7 mph | ↑ | 90% | 29.87 "Hg | 10 mi |
| 2:52 am | | 77 °F | Passing clouds. | 5 mph | ↑ | 90% | 29.87 "Hg | 10 mi |
| 1:52 am | | 77 °F | Passing clouds. | No wind | ↑ | 88% | 29.90 "Hg | 10 mi |
| 12:52 am | | 76 °F | Passing clouds. | 3 mph | ↑ | 91% | 29.91 "Hg | 10 mi |
| 12:11 am | | 77 °F | Passing clouds. | 5 mph | ↑ | 90% | 29.93 "Hg | 10 mi |
| 11:52 pm Sat, Jul 19 | | 77 °F | Passing clouds. | 7 mph | ↑ | 90% | 29.94 "Hg | 10 mi |
| 10:52 pm | | 78 °F | Mostly cloudy. | No wind | ↑ | 84% | 29.96 "Hg | 10 mi |
| 10:41 pm | | 78 °F | Mostly cloudy. | No wind | ↑ | 84% | 29.97 "Hg | 10 mi |
| 9:52 pm | | 78 °F | Partly cloudy. | 3 mph | ↑ | 84% | 29.96 "Hg | 10 mi |
| 8:52 pm | | 77 °F | Partly cloudy. | 3 mph | ↑ | 85% | 29.95 "Hg | 10 mi |
| 7:52 pm |  | 78 °F | Cloudy. | 9 mph | ↑ | 82% | 29.96 "Hg | 10 mi |
| 7:21 pm | | 78 °F | Cloudy. | 12 mph | ↑ | 84% | 29.96 "Hg | 10 mi |
| 6:52 pm |  | 78 °F | Thunderstorms. Mostly cloudy. | 10 mph | ↑ | 84% | 29.96 "Hg | 10 mi |
| 6:30 pm | | 79 °F | Thunderstorms. Mostly cloudy. | 14 mph | ↑ | 79% | 29.97 "Hg | 10 mi |
| 6:17 pm | | 80 °F | Cloudy. | 13 mph | ↑ | 79% | 29.96 "Hg | 10 mi |
| 5:52 pm | | 82 °F | Thunderstorms. Cloudy. | 10 mph | ↑ | 79% | 29.96 "Hg | 10 mi |
| 4:52 pm | | 87 °F | Thunderstorms. Mostly cloudy. | 12 mph | ↑ | 67% | 29.94 "Hg | 10 mi |
| 3:52 pm | | 87 °F | Broken clouds. | 9 mph | ↑ | 67% | 29.96 "Hg | 10 mi |
| 2:52 pm | | 88 °F | Broken clouds. | 6 mph | ↑ | 65% | 29.97 "Hg | 10 mi |
| 1:52 pm | | 87 °F | Broken clouds. | No wind | ↑ | 67% | 30.00 "Hg | 10 mi |
| 12:52 pm |  | 82 °F | Rain. Broken clouds. | No wind | ↑ | 77% | 30.03 "Hg | 8 mi |
| 11:52 am |  | 83 °F | Light rain. Broken clouds. | 7 mph | ↑ | 74% | 30.03 "Hg | 10 mi |
| 10:59 am | | 82 °F | Light rain. Broken clouds. | 7 mph | ↑ | 79% | 30.04 "Hg | 10 mi |
| 9:52 am | | 82 °F | Partly sunny. | 3 mph | ↑ | 77% | 30.05 "Hg | 10 mi |
| 8:52 am | | 80 °F | Partly sunny. | No wind | ↑ | 81% | 30.04 "Hg | 10 mi |
| Weather by CustomWeather, © 2025 | ||||||||