Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Home » May 2015 was warmest May on record for globe; March–May and year-to-date also record warm
Scroll to Top

Popup Call to Action

A prompt with more information on your call to action.