I agree, those sensors are a good value. Monitoring humidity is another thing that can come in handy for us watery folks. One could add one to a riparium, reporting air and water temp along with the humidity. Just don't drown the sensor housing.
One of the screenshots above is a "mobile link" with the latest sensor data formatted for a smart phone screen. So you just pull up that link on your phone browser and bingo. Temps on the road.
What I have not figured out is how long they will collect data, in other words, how large the data file gets before it is either reset, or the oldest data drops off. I emailed them about that. Would be nice if you could reset that yourself.