Bread Proofing Temperature Chart

Yeast works best in a narrow temperature range. This guide covers water temperatures for yeast, ideal dough and proofing temperatures, and cold retarding.

Bread and yeast temperatures

Stage	Temperature
Water for active dry yeast	105–110 °F (41–43 °C)
Water for instant yeast (mixed with flour)	120–130 °F (49–54 °C)
Ideal dough temperature after mixing	75–78 °F (24–26 °C)
Ideal proofing (yeast dough)	75–80 °F (24–27 °C)
Sourdough bulk fermentation	75–82 °F (24–28 °C)
Cold retard (refrigerator)	38–40 °F (3–4 °C)
Yeast activity slows sharply	Below 50 °F (10 °C)
Yeast dies	Around 140 °F (60 °C)

Notes

Warmer dough rises faster, but a slower rise develops more flavor. At about 75–80 °F (24–27 °C), most yeast doughs double in 1–2 hours. A cold overnight proof in the fridge slows fermentation for better flavor and easier scheduling. Make a warm proofing spot with an oven turned off with its light on, or with a pan of hot water on the rack below the dough.

Frequently asked questions

What is the best temperature to proof bread?

75–80 °F (24–27 °C).

What water temperature activates yeast?

105–110 °F (40–43 °C) for active dry yeast.

What temperature kills yeast?

Around 140 °F (60 °C).

Can I proof dough in the fridge?

Yes — cold proofing for 8–72 hours slows fermentation and develops flavor.