monitor and control temp and humidity using arduino

hi all,
i am currently working on my college project named as "temp and humidity monitor and control using server'.what i am planning to do is triggering the relay switches when the temp and humidity exceeds certain value .temp and humidity data sent by the dht22 sensor can be monitor using a webpage or thinkspeak server. if any changes needed to the values that trigger the relays need to done with in the web page. will it be possible with arduino?
help me with this