I will be travelling to London Oct 9 - 17. What is the weather like this time of year? Trying to figure out how I should pack.

Also, what are the best sites to see? Also wanted to schedule a day or overnight trip to Paris. Any suggestions? Eurorail?

Welcome to Fodors.

You probably should re-post w/ a title that at least mentions London (or better yet London and Paris) "Weather & Itinerary" could be asking about anywhere in Europe.

But to give you some basic answers - - What reasearch have you already done - what sorts of things do you enjoy? If you click on DESTINATIONS above and follow the links to london you will find a lot of information to help you get started. Then do a search - there are hundreds of threads w/ good info about London and Paris

As for weather expect anything except 90F and freezing. Basically - dress in layers so you are ready for nice days and cool/cold days. Take something waterproof and a small umbrella - but also some light weight things.

London will PROBABLY be cool, not cold, and cloudy and damp with some rain showers. It won;t be 90 and it won;t snow.

Don't say where you're from so it's hard to give a comparison. Not too different from DC/Philly/NYC - in spring and fall only.

As for what to do there - get several guidebookks and read. Then come back with specific questions.

It still feels unseasonably warm today, around 20 Celsius (high 60s Fahrenheit), but with some cooler, wetter weather on the way.

You can watch the local weather reports at www.bbc.co.uk/weather