This is really not a question about the sky is it :)
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In any region close to the Earth, the temperature can vary from about -160ºC to over 200ºC, based on Table 11-43 "Typical Operating Temperature Ranges for Selected Spacecraft Components," from "Space Mission Analysis and Design," Wertz and Larson (eds) Kluwer 1999, ISBN 1884883108.
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the variation depends on if it is sunlit or shaded
when you get away from any thermal influence of the sun or other body, ie. deep space, the temperature drops to the cosmic background radiation temp of ~ 4 K
Dave