MorganF

Weather Layer is a plugin which allows you to display a layer with weather information for a choosen city.
For example, if you want to display weather for Paris into a post, you just need to insert the following shortcode :
[weatherlayer country=”France” city=”Paris”]
This will display a horizontal layer with weather information related to Paris, France. This format fits well for single posts. However, if you want to insert a weather layer into your sidebar, the WL widget is what you need. Drag and drop it in the widgets menu then fill the form.
Finally, if you want to display a vertical layer with a shortcode, use this :
[weatherlayer country=”Japan” city=”Osaka” display=”vertical”]
Supported languages are English, French, Spanish, German, Italian, Russian, Japanese and Polish.
NB : 
This plugin is using Open Weather Map.

Weather Layer

do_shortcode

Display weather data on your blog thanks to Open Weather Map. Example of use : [weatherlayer country="France" city="Paris"]

tiempocom

This plugin provides you the daily weather forecast for the locations you choose. 
With no configuration, you will be able to manage widgets and shortcodes with no hassle.
Features:
<ul>
<li>Ability to specify a different language for each widget/shortcode.</li>
<li>Locations all over the world.</li>
<li>Tons of options and configurations including: colors, layouts, formats, and many more.</li>
</ul>
Speed load impact:
<ul>
<li>Only a CSS file will be loaded, no JS on the front-end.</li>
<li>Images are loaded from the tiempo.com static file CDN server.</li>
<li>Internal file caching.</li>
</ul>
Important: In order to mitigate the site speed impact, please make sure to set write permissions to the <code>tiempocom/cache</code> directory. The plugin performs an intelligent expiry time management to ensure you have always the data up to date.
Supported languages:
<ul>
<li>English</li>
<li>Spanish (Spain)</li>
<li>German</li>
<li>Catalan</li>
<li>French</li>
<li>Italian</li>
<li>Portuguese</li>
<li>Euskera</li>
<li>Galician</li>
</ul>

Tiempo.com

Tiempo.com for WordPress. Allows to add weather widgets and shortcodes from the tiempo.com API.

Weather Layer vs Tiempo.com