Seeeduino Stalker code for logging temperature and humidity from a DHT-22 sensor on an SD-card from: http://www.seeedstudio.com/depot/Seeeduino-Stalker-Waterproof-Solar-Kit-p-911.html
The scripts include some basic checks to repeat logging given an erroneous reading.
Load this script on the device to start logging, setting the sampling delay appropriately: stalker_temperature_log_to_sdcard.ino
Load this script when wanting to print off values: stalker_print_log_file_to_serial.ino