like mentioned in an earlier thread you must expect anything from near freezing with heavy winds and rain to warm late-fall days with beautiful blue sky !!!
Be prepared and bring waterproof shoes and jackets !
When it get`s too bad just take a break hop on the train direction Paris and exit at Val D'europe ( just one station ) ang go shopping at this beautiful mall and see the sea life auarium there ..
Or go to Paris and visit the musee D'Orsay with all the nice expressionist paintings !!!!
Be flexible and have a travel guide at hand .. there are a million things to see in paris !!!!
Have a nice trip...and i will be in Paris from tomorrow for 6 nights, so can report first hand what is happening !!!
Stephan