Peel the cucumbers and slice into thin rounds. Place them in a strainer over a bowl and sprinkle with 1 tsp of salt and let sit for 5-10 minutes (this allows the cucumber to release extra water)
Add the thinly sliced red onion, chopped dill, juice of 1 lemon, sour cream and remaining tsp of salt into a mixing bowl and stir to combine.
Stir in the cucumbers when they are done straining. Let chill in the fridge for at least 30 minutes befoer serving
Notes
Be sure to let the salad sit in the fridge for at least 30 minutes before serving. It needs that time to develop flavor and it tastes the best chilled.