The city and this part of France is a great place to visit any time of year. Paris, with its temperate climate can rain unexpectedly, so an umbrella can prove very handy.
The summer can have the occasional heat wave but usually is mild compared to the south of the country. Winters can be cold, but not severe, with snowfalls fairly rare.
Paris on the Map: Paris Map.
North of France: Climate and Weather for Lille Lille Weather.
South of France: Nimes Climate and Weather: Weather in Nimes.
You can find North Holland and Amsterdam hotels to budget backpackers and boutique hotels.