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Please note: Due to scheduled maintenance, many NCEI systems will be unavailable June 5 8AM to 5PM. We apologize for any inconvenience.

Seasons

August 10, 2018
Arctic sea ice reaches its maximum extent this month. The Sea Ice Index houses a repository of data used to track sea ice trends and changes.
June 21, 2017
NCEI’s environmental data provide critical information for retailers, manufacturers, and the companies that invest in them.
August 27, 2018
The NOAA/NASA Suomi National Polar-orbiting Partnership satellite shows how the holidays affect nighttime light intensity around the globe.
December 5, 2019
See which places have the best chance of being a winter wonderland on December 25 according to weather history.
August 22, 2018
Forecasters are predicting some impacts from La Niña conditions this winter in outlooks for the Midwest, Great Lakes, and Missouri basin.
August 14, 2018
Our maps help identify which day of the year, on average, has the highest maximum temperature across the United States.
April 15, 2019
Based on 30 years of climate records, our map shows when you can expect to see temperatures dip to 32°F or below for the last time.
December 3, 2018
Find out when you should expect the coldest day of the year in your area with our map based on the U.S. Climate Normals.
September 21, 2018
Meteorologists and climatologists define seasons differently from “regular” or astronomical spring, summer, fall, and winter.