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Lanham Weather Forecast
| TODAY | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
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| Sunny | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Partly Cloudy | Partly Cloudy | Chance of T-Storm | Chance of T-Storm | Chance of T-Storm | Chance of Showers | Chance of Showers |
| Hi: 91°FHi: 33°C | Lo: 69°FLo: 21°C | Hi: 90°FHi: 32°C | Lo: 70°FLo: 21°C | Hi: 81°FHi: 27°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Hi: 89°FHi: 32°C Lo: 65°FLo: 18°C | Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 89°FHi: 32°C Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C Lo: 69°FLo: 21°C | Hi: 85°FHi: 29°C Lo: 69°FLo: 21°C |
| POP: 20% | POP: 20% | POP: 60% | POP: 60% | POP: 40% | POP: 50% | POP: 50% | POP: 50% | POP: 50% |
POP = Probability of Precipitation.
Weather Outlook Updated: 233 AM EDT Wed Sep 16 2026 
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Issued: 351 AM EDT Wed Sep 16 2026
Key Messages
1) Hot and muggy weather is expected today and Thursday, with heat indices forecast to reach the mid 90s to 100 across portions of the lowlands on both days. Friday through the weekend will not be as hot, albeit still on the warm and humid side given the time of year.
2) An active pattern returns today as a cold front approaches the area from the north. The front is progged to become quasi- stationary in the vicinity of the forecast area through the weekend and into early next week, s...