I have some good news & bad news - since you are not hosted here at WordPress.COM we can't help you with your site (see below for links to get help) - the good news is with your WordPress.ORG install you have a bunch of options open
Never tried weather stations but they should have some help or programs to help display the weather data - I would also look over at the home of the manufacture of your weather station
The site you are asking about does not seem to be hosted on WordPress.COM so you need to make friends over at WordPress.ORG the keepers of the software you are using.
This site is for support of sites hosted on WordPress.COM. You should address your questions to WordPress.ORG the keepers of the software you are using: http://wordpress.org/support/
For more on the difference: http://support.wordpress.com/com-vs-org/