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Chantilly Weather Forecast
| REST OF TODAY | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  | | | |  |  |  | | | | |
| Sunny | Partly Cloudy | Mostly Sunny | Clearing | Sunny | Mostly Clear | Chance of Showers | Chance of Showers | Mostly Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| Hi: 81°FHi: 27°C | Lo: 60°FLo: 16°C | Hi: 85°FHi: 29°C | Lo: 61°FLo: 16°C | Hi: 89°FHi: 32°C | Lo: 71°FLo: 22°C | Hi: 89°FHi: 32°C | Lo: 69°FLo: 21°C | Hi: 81°FHi: 27°C | Lo: 65°FLo: 18°C | Hi: 85°FHi: 29°C | Lo: 69°FLo: 21°C |
| POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 904 AM EDT Mon Sep 07 2026 
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Issued: 903 AM EDT Mon Sep 7 2026
Key Messages
- 1) Dry and seasonable conditions with lower humidity early this week.
- 2) Shower & thunderstorm chances return midweek.
Discussion
... KEY MESSAGE 1...Dry and seasonable conditions with lower humidity early this week.
High pressure will build into the region through Tuesday. Lower humidity, dry conditions and sunshine with light winds will be expected during this period. The high moves to the western Atlantic just offshore of the East Coast Tuesday night. This will allow for a south to s...