- Line voltage: 100–240V AC
- Frequency: 50Hz to 60Hz, single phase
- Maximum continuous power: 370W
- Operating temperature: 50° to 95° F (10° to 35° C)
- Storage temperature: –40° to 116° F (–40° to 47° C)
- Relative humidity: 5% to 95% noncondensing
- Operating altitude: tested up to 16,400 feet (5000 meters)
Not a problem.
But as it only throw 370 Watts Max, you may still need a space heater if you sit in there.
With MacBooks that are more portable, the risk is not so much low temperatures, but the possibility of bringing a chilled MacBook in to a warm MOIST environment and having condensation form on the cold aluminum before it warms up properly.