Does temperature or humidity affect the life of a CFL? For example, would a CFL work in extremely cold temperatures, or extremely wet climates?
Extreme temperatures can affect CFLs. Some CFLs can be used outside in temperatures down to 10 degrees Fahrenheit and up to 120 degrees Fahrenheit, though when it is very cold they may take longer to reach full brightness. There are some ENERGY STAR qualified CFLs that are weatherproof and can be used outside where exposed to rain, so check for “weatherproof” models before installing it in your outdoor spot light.
