In a medium bowl, combine the graham cracker crumbs, sugar, and melted butter. Mix well until fully combined. Press the mixture into the bottom and slightly up the sides of a 9-inch springform pan. Bake for 10 minutes, then let it cool.
Using an electric mixer, beat the softened cream cheese on medium speed until smooth.
Add the granulated sugar and mix on low speed until just combined.
Add the eggs one at a time, mixing on low speed only until each is incorporated.
On low speed, gently mix in the sour cream, vanilla extract, and lemon juice until just combined.
Wrap the outside of the springform pan with foil to prevent water from seeping in. Place in a large roasting pan.
Pour the cheesecake filling over the cooled crust. Fill the roasting pan with boiling water until halfway up the springform pan.
Bake for 60-70 minutes, until edges are set, but center jiggles slightly. Turn off oven and crack the door open, allowing cheesecake to cool in the oven for 1 hour.
Remove cheesecake from the water bath and let it cool completely on a wire rack. Cover and chill in the refrigerator for at least 6 hours or overnight before serving.
Notes
Using full-fat cream cheese provides rich texture. For tartness, use freshly squeezed lemon juice.