Yes, this can be done, but I think you need the Series 2 XBee. Here is a nice writeup on how to interface the sensor to the XBee: http://jdesbonnet.blogspot.com/2012/01/ ... ature.html
Since Arduinos are 5v devices and the XBees are 3.3v devices you need something like the XBee adapter to shift the logic levels. https://www.adafruit.com/products/126
You can interface more other remote sensors via the same XBee. A local sensor would require just 2 pins. You can use the RTC on the logger shield for timing.
For a great reference on remote sensing with XBees, I highly recommend Rob Faludi's book:https://www.adafruit.com/products/963