openweathermap.org offers an api to query weather information

for instance http://api.openweathermap.org/data/2.5/forecast?lat=35&lon=139&appid=YOURAPPID

gives the weather forecast for 5 days with data every 3 hours by geographic coordinates.  (documentation : http://openweathermap.org/forecast5)

You need an api key. There's a free plan allowing 60 requests per minutes

Then you can you requests python package to query this api

import requests

rep = requests.get('http://api.openweathermap.org/data/2.5/forecast?lat=35&lon=139&appid=YOURAPPID')

print(rep.json())

Thank you so much, I will give it a shot.

Thanks a lot