You can try Weather Underground. This is one of the best sites for weather information and I always rely on this to plan my road trips. I've found the information very comprehensive and the layout & navigation thoroughly satisfying.
If you sign up as a paid member ($10/yr, although there are free memberships with lesser features), you'll have access to email forcasts & updates. From their sign-up page:
Our new email forecast and alert service is included with every membership. As a member, you select cities where you want weather updates, and we'll send you alerts immediately after they are issued by the National Weather Service. Forecasts are reformatted for text, or html devices, and can be sent whenever you choose as a paid member.
I'm not sure if the information for other countries will be as comprehensive as that for the US, mainly because different weather stations report information selectively. But it might be worth a try.