The Washington Post's Capital Weather Gang have issued their first peak bloom forecast for the season: "most likely between April 7 and April 11, centered on April 9."
That's very similar to the National Park Service forecast of sometime between April 8 and 12.
Last year the Capital Weather Gang's forecast ended up being closer than the initial NPS forecast, although it was still a few days on the early side.
If you'd like to dive into the weather data that went into the forecast, you can find it here.
Want to Help Support DC's Cherry Trees?
If you'd like to help support the care and upkeep of the cherry trees around the Tidal Basin, the Trust for The National Mall has launched an Endow a Cherry Tree Campaign. Donations go to the official Cherry Tree Endowment, which will give the National Park Service additional resources to fund the care, maintenance, and possible replacement of the cherry trees. You can find more information here.
The Trust is dedicated to marshaling private support for maintaining and improving the history National Mall area. I'm not affiliated with the Trust--just an admirer of their efforts.