Bring a large pot of salted water to a boil. Add fresh corn kernels and cook for about 5-7 minutes until tender. Drain and cool on a baking sheet.

Dice the cucumber, halve the cherry tomatoes, and chop the red onion. Combine prepped veggies in a large mixing bowl with cooled corn.

In a separate bowl, whisk together the mayonnaise, sour cream, lime juice, chili powder, salt, and pepper until smooth.

Pour the dressing over the vegetable mixture and gently toss until everything is coated evenly.

Crumble feta cheese over the salad and sprinkle with cilantro before serving.

Serve immediately or let chill in the refrigerator for up to an hour.