Light Source Temperatures

http://photo.net/learn/optics/edscott/cf000030.htm

Tungsten standard service bulb 2600 – 2800 °K
Projector lamps 3200 °K
Photoflood 3400 °K
Flashbulb clear 4000 °K
Electronic flash 5000 – 6000 °K
Daylight 5500 °K
Overcast daylight 7500 °K
North sky no shadows 10,000 – 20,000 °K