TMP36 - just outputs an analog voltage, correct? You supply it with VCC, Gnd, you get Vout back. Reading the datasheet, they suggest several ways to transfer that Vout remotely - convert it to a frequency, some buffering schemes. You could even put an A/D chip with it and read the A/D output serially. Heck, you could even get fancy and try to send it wirelessly - install it in place with a Promini or an ardweeny to sample it with the onboard ADC, and send it out with 434MHz Tx module. On the other end put a 434Rx Module. Could even write in some smarts around it, control some stuff locally if danger conditions start arising. You haven't said what you're monitoring, so I can only wildly speculate and make incredulous suggesitions as to what might be done 
Often, reading the datasheet for the part you want to will provide insights into others uses of a part. Or search for application notes.