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2.
The yummiest of all the Z-list celebrities. To be a weathergirl you must be either blonde or brunette or redhed, and you must be very pretty and have a great body. If you wish to be a weathergirl, being swedish is of benefit but not a requirement. Famous weathergirls include Ulrika Johnson and bald-headed-moustache-man Michael Fish. If you see a weathergirl, steer clear of them as they will have an IQ of roughly 3, and this may cause them to spontaneously combust.
Kevin: "Who's that nobody?"
Phil: "Just some weathergirl."
Kevin: "Hmm, hottie."
by Jamie Douglas September 01, 2006
 
1.
A girl that brightins up ur day when ur sad.
"Whenever im sad my weather girl cheers me up."
by Mr.$ontavo January 03, 2008