I want to weather information in my website which should be autometically updated daily could you please help me script for weather information?
Go to Weather.com and sign up for a Weather Widget. This is a javascript script that you'll place on your page and is independent of the server side language used. Note also that you won't have to update the weather daily at all: the script will always just pull the current weather forecast. You will have to provide information about the area for which you want weather (e.g. zip/postal code).
If you want data automatically updated on a schedule, look into cron
(on Unix systems) or its equivalent. If you're using a commercial web host, they should have a way to schedule programs; otherwise, look into your own system's documentation for scheduling scripts.
Next, you want to write a script that downloads the weather information at that moment. Allow this script to translate from the "source" format to your own format.
Have the scheduler run your script once a day.