This is a reply I received from Vizio.
Dear Vizio Customer,<?: prefix = o ns = "urn:schemas-microsoft-com
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After reviewing your email regards to your VIZIO TV,
If the TV is not being operated then it can be in as low as -20 Celsius.
Operating 5~<?: prefix = st1 ns = "urn:schemas-microsoft-com
ffice:smarttags" /><st1:chmetcnv TCSC="0" Number="1" Negative="False" HasSpace="False" Sourcue="35" UnitName="℃" w:st="on">35℃</st1:chmetcnv>
Non-operating -20~<st1:chmetcnv TCSC="0" Number="1" Negative="False" HasSpace="False" Sourcue="50" UnitName="℃" w:st="on">50℃</st1:chmetcnv>
Thank you for contacting VIZIO. If we can be of any further assistance to you, please feel free to contact us