Yes. The J1772 connector that plugs into the Volt is designed to be used in all weather conditions. The electronics unit housing of the factory EVSE, unless it has been opened as would be required if it had been repaired, is factory weather sealed. The 5-15 power plug is not fully weather rated so it should not be used with an extension cord and allowed to lay on the wet ground or be directly exposed to water or rain. So you can safely plug in the EVSE that comes with the Volt into a 5-15 outlet that is inside a garage or a carport or otherwise shielded from the rain/weather and charge the Volt outside in the rain (as long as the charging cable can reach the Volt's charging port.)Can you use the cord that comes with the Volt outside? In the rain?