Measure the temparature via USB
If you are interested in monitoring the exact temperature somewhere via a computer you might be interested in this USB thermometer from Brando. The unit can read temperatures between -20 to +100 degrees Celsius and you get a monitoring program that logs the actual temperature in a set interval that you choose (from every second to everyy 12th hour). The price tag reads $19.
The unit measures 50x17x8 millimeter and weighs 8 grams.
USB Thermometer [brando.com.hk]