What temperature is too cold for electronics? - Liquid Image
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Electronics can generally handle cold temperatures, but just like us they have their limits. Generally, the optimum temperature for most electronics is around 70 degrees Fahrenheit (21 degrees Celsius) but there is no one definitive answer as it depends on the type of electronic. Most electronics are designed to continue operating at temperatures up to …

Also discusses high temps, and any things that should NOT be stored in garages that reach temperature extremes. Details what might happen.

TLDR quotes:

At temperatures lower than 41 degrees Fahrenheit, it is likely the electronics will become unstable and display erratic behavior.

Most electronics are designed to continue operating at temperatures up to 120 degrees Fahrenheit (50 degrees Celsius). At temperatures higher than 120 degrees Fahrenheit, the electronic can reach its thermal limit, causing components to fail and degrade.