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...
You can use Where2go from Meteoblue, they have very accurate forecast predictions as well https://www.meteoblue.com/en/weather/outdoorsports/where2go