Washington DC weather forcast to reach 108 F.

[Igel]

10. When?

https://forecast.weather.gov/MapClick.php?lat=38.895110000000045&lon=-77.03636999999998

That's NOAA.

Through next Thursday (I'm writing at about noon DC time on 6/20 Friday),

Today Increasing clouds, with a high near 87. West wind around 9 mph.
Tonight Mostly cloudy, then gradually becoming clear, with a low around 69. Light south wind.
Saturday Sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night Mostly clear, with a low around 74. South wind around 5 mph.
Sunday Sunny and hot, with a high near 97. West wind 3 to 6 mph.
Sunday Night Mostly clear, with a low around 77.
Monday Sunny and hot, with a high near 99.
Monday Night Mostly clear, with a low around 79.
Tuesday Sunny and hot, with a high near 101.
Tuesday Night Partly cloudy, with a low around 79.
Wednesday Mostly sunny and hot, with a high near 99.
Wednesday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Thursday A chance of showers and thunderstorms. Mostly sunny, with a high near 95. Chance of precipitation is 30%.