McLean, VA Weather Forecast
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McLean Weather Forecast
| REST OF TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | LABOR DAY |
| Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Chance of T-Storm | Chance of T-Storm | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Sunny | Mostly Clear | Mostly Sunny |
| Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 75°FLo: 24°C | Hi: 91°FHi: 33°C | Lo: 70°FLo: 21°C | Hi: 85°FHi: 29°C | Lo: 65°FLo: 18°C | Hi: 81°FHi: 27°C | Lo: 61°FLo: 16°C | Hi: 81°FHi: 27°C |
| POP: 20% | POP: 50% | POP: 30% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1055 PM EDT Tue Sep 01 2026 

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Issued: 826 PM EDT Tue Sep 1 2026
Key Messages
- 1) Daily severe weather threat through the end of the week.
- 2) Hot and humid conditions yield possible record high minimum temperatures this week
- 3) Decreasing heat & thunderstorm chances heading into Labor Day weekend.
Discussion
... KEY MESSAGE 1...Daily severe weather threat through the end of the week.
Aloft, upper level ridging over the Ohio River Valley slowly shifts eastward this afternoon as a shortwave trough pivots over the forecast area. At the surface, a strong low pressure ...
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