Best Graphical Library To Develop a Weather Simulation Map?

[nickedge]

I want to recreate a weather map that you see on most weather channels. I don't need real time Doppler radar data, I would use a fake data set to populate the US map with weather patterns such as precipitation and color the map according to the temperature (i.e. red for 100+ degrees, orange for 90+ degrees, etc etc) and it would change over time (say a 30 second loop that renders the weather patterns for the day). What graphical libraries are good for this type of project?

Thank you!