Final proof is the stage that determines oven spring and scoring results. Even perfectly fermented dough during bulk can bake flat if the final proof temperature is wrong.

Unlike bulk fermentation, final proof can be done either warm or cold depending on scheduling and flavor goals.
Quick Answer: Best Final Proof Temperature
Room temperature proofing works best around 72–78°F for same-day baking. Cold proofing in the refrigerator (38–42°F) slows fermentation and improves scoring, flavor, and crust development.
Room Temperature Final Proof
At room temperature, dough continues expanding quickly and must be baked at the correct moment. Warmer kitchens shorten proof time dramatically.
Cold Proof (Refrigerator Method)
Cold proofing slows yeast activity while bacteria continue developing flavor. The dough becomes easier to score and produces stronger oven spring.
Controlling Proof Consistency
Because home kitchens fluctuate daily, proofing times can vary by hours. A stable fermentation environment allows predictable baking results, which is why many bakers use a temperature-controlled proofing box.
For a full explanation of fermentation ranges, read the sourdough proofing temperature guide.