WP Cloudy is a powerful weather plugin for WordPress, based on Open Weather Map API, using Custom Post Types and shortcodes, and much more.
Finally beautiful weather widgets for your site.
Customize maps in your post, pages and widgets. Add geotag to your blog and site. Use GPX, KML, CSV, TXT ...
Yet Another Weather Plugin (Yawp) allows you to retrive weather information from openweathermap to your website
The Waypoint HD Weather Widget, HD weather, that changes with the outside conditions, over 49 Different "Feels"