How to Add Syndicated Content to a Single WP Post

I have a wordpress post about weather in Havana and would like to include information from an updated RSS feed which provides information about current weather in the city, sample feed is:

http://weather.msn.com/RSS.aspx?wealocations=wc:CUXX0003&weadegreetype=C

I would like this updated information added at the end of the post. How would I go about it?

 

search for a plugin first.

second, create a plugin,

create a custom sidebar,

or maybe use a custom field like the overstand.de template.

 

I don't want it in a sidebar, I'd like it in that particular post. Also, I won't be syndicating new posts when the feed is updated, I just want that feed displayed so it shows its current content.

 

This is the sidebar as main content w/ RSS feed. Its pretty messy on the backend since it took less than an hour to setup with magpie. Could use a lot more CSS.

http://www.shallowink.com/dev/demo/