Here is a scenario, I live in Seattle which is mostly cloudy or rainy these days. And I want to spend next weekend at a location, which should be close to my city but has reasonable probability of sunshine. I have found websites which give me forecast for a given location for next 10 days; but that requires me to keep trying the locations around me one by one, while increasing the diameter. I also found websites which show me the forecast for the whole state but only for next 1 or 2 days. So that is not very useful.
Sunspot - Find Good Weather in Your Area https://appsto.re/us/1ohaib.i
I made this app to address the problem. I'm also from Seattle. This does pretty much exactly what you want.
You can do this with a predictive weather map. For example, http://www.weather-forecast.com lets you get a map centred around any country or (for some countries) a state/province, fast forward to a date (up to 10 days), then look for sun.
For example, here's their map centred around Washington State for next Saturday as an example. Each of those icons gives you a basic local forecast when mouseovered:
How reliable is it? Depends on the local weather data, but it's the simplest way I've found to browse for nearby sunshine.
The website's navigation is a bit... old-school. Start at http://www.weather-forecast.com/maps then find a country of interest, then hit the
+ button to choose a state/province then press the
→ arrow or drag the slider to navigate to the date and time you want.
Of course, how useful the information shown on the map is will vary by region...