Data Snapshots

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Difference from Average - Monthly
Where was the monthly temperature warmer or cooler than usual?  

Colors show where average monthly temperature was above or below its 1981-2010 average. Blue areas experienced cooler-than-usual temperatures while areas shown in red were warmer than usual. The darker the color, the larger the difference from the long-term average temperature.

Where do these measurements come from?  

Weather stations on every continent record temperatures over land, and ocean surface temperatures come from measurements made by ships and buoys. NOAA scientists merge the readings from land and ocean into a single dataset. To calculate difference-fr...

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