OpenWeatherMap - OpenWeatherMap is a location-based weather information providing service over the internet.
Dark Sky - Hyperlocal weather information, now on the web ⛈
Weather.com - The Weather Channel and weather.com provide a national and local weather forecast for cities, as well as weather radar, report and hurricane coverage
WeatherBase - WeatherBase was basically launched with the aim of assisting the tourists and business persons to get information about the weather in the area they are planning to visit.
Weatherspark - WeatherSpark is a typical weather information service provider over the internet for freely getting the real-time hourly, daily, weekly and monthly graphical reports of the average weather.
Windy - Wind and weather forecast for kiters, surfers, pilots, sailors and anyone else.