Go to Account Settings Edit Appearance Edit Theme.
Click on the Edit HTML link underneath Custom Theme.
Paste POWr Script
Paste this exact POWr script into your HTML file, in between the Head tags. Then update and save.
Create New Text Post
Go back to the Tumblr dashboard and add a new Text post.
Paste the Shortcode
Paste the shortcode into the post. Then save. You'll see the new POWr Weather plugin when you expand the post. Click the POWr Settings Icon to set up POWr Weather.
Begin editing the following Weather Plugin directly inside of the Tumblr site:
Go to the live Tumblr website and click the Settings Icon in the top right corner of your Weather Plugin.