This plugin gives the weather for a city in the US(Web Service call).
[23:55] <The_Birdman> ~describe weather
[23:55] <jerkbot> Tells the weather of a city
[23:56] <The_Birdman> ~help weather
[23:56] <jerkbot> ~weather <city>
[23:57] <The_Birdman> ~weather Chicago
[23:57] <jerkbot> Weather for 'Chicago': Sunny