We quite frequently get asked about optimum operating temperatures for the Raspberry Pi – frequently enough that this was a very early addition to our FAQs page back in 2012: The Raspberry Pi is built from commercial chips which are qualified to different temperature ranges; the LAN9512 is specified by the manufacturers being qualified from 0°C to 70°C, while the AP is qualified from -40°C to 85°C. You may well find that the board will work outside those temperatures, but we’re not qualifying the board itself to these extremes. And we left it at that.

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