Temperature reference

58–62°F Sourdough (14.40–16.70°C)

Q: How does a 58-62°F kitchen affect sourdough?

Bulk multiplier 2.500× and proof multiplier 2.400× relative to the 76°F baseline. Starter activity: sluggish. Cold kitchen territory — cellars, garages, unheated rooms. Ferment time is 2.5× longer than baseline 76°F. Excellent for flavor development when you have the patience. If your kitchen runs this cold naturally, either move dough to a warmer spot or extend bulk and proof times dramatically. Consider using 20-25% levain instead of 15-20% to compensate for slow activity.

Bulk multiplier: 2.500× · Proof multiplier: 2.400× · Activity: sluggish

Share on X

Dial shows where 58–62°F sits on the sourdough activity scale (32–100°F). Indicator points at the midpoint; color shifts from cool blue (dormant) to warm orange (hyperactive).

Recommendation

Cold kitchen territory — cellars, garages, unheated rooms. Ferment time is 2.5× longer than baseline 76°F. Excellent for flavor development when you have the patience. If your kitchen runs this cold naturally, either move dough to a warmer spot or extend bulk and proof times dramatically. Consider using 20-25% levain instead of 15-20% to compensate for slow activity.

Timing calculator at this temperature

Bulk (at 76°F)(h)

Proof (at 76°F)(h)

Your kitchen temp(°F)

Multiplier at 60°F: 2.55×
Adjusted bulk ferment: 10.2 h
Adjusted final proof: 30.6 h

How the math works

Multipliers are piecewise-linear interpolations between reference points measured by Myhrvold et al. in Modernist Bread vol 3. 76°F is the baseline (1.0×); every 10°F drop roughly doubles fermentation time, and every 10°F rise roughly halves it.

How each style behaves at this temperature

Click any style to see its full timing at 58–62°F:

Guide: temperature and time in sourdough — the piecewise-linear multipliers and how to use them in planning
Autolyse strategy by temperature — warmer kitchen needs shorter autolyse before adding starter
Levain build timing — how long to wait before peak in a hot vs cold kitchen
All 25 recipes — each has a /timing page — each recipe shows bulk + proof at 58-62°F
All 12 hydration levels — drier doughs ferment slower; combine hydration choice with temperature
All 8 temperature ranges — from cold retard 38-40°F to peak summer 88-95°F

The gear that makes the math work

A short, honest baking kit. The scale matters most — every weight on this page is in grams. The Dutch oven is what turns a good crumb into a great crust.

Digital kitchen scale (0.1 g)
Baker's percentage is by weight, not volume — a 0.1 g scale is what makes the math on this page accurate.
View on Amazon →
Dutch oven / combo cooker
Traps steam for the first bake phase — the single biggest factor in oven spring and a blistered, glossy crust.
View on Amazon →
Banneton proofing basket
Wicks moisture and holds shape during the final proof, so high-hydration dough doesn't spread flat.
View on Amazon →
Bread lame + bench scraper
A sharp lame scores clean ears; a steel bench scraper handles wet, sticky dough without tearing the gluten.
View on Amazon →
High-protein bread flour
The math assumes ~12–14% protein. Real bread flour absorbs the hydration you calculate — all-purpose won't.
View on Amazon →
Danish dough whisk
Mixes shaggy, high-hydration dough in seconds without the gluey mess of a spoon or your hands.
View on Amazon →

🎧 Or learn the craft by ear

The numbers here are the what; a good baking book is the why. An Audible trial gets you any title free — Michael Pollan’s Cooked(the “Air” chapter is the best story ever told about why bread rises) is a perfect first listen.

Start a free Audible trial →

As an Amazon Associate, SourdoughHydration earns from qualifying purchases at no extra cost to you. More on how this is funded.

Gear guides — what actually matters

Recommendation

Timing calculator at this temperature

How each style behaves at this temperature

Related references on this site

The gear that makes the math work