Climate in the United States

Climate in the United States is comprised of many factors that impact our communities, schools, and businesses over time. Get data on how different regions and populations experience temperature, precipitation, and extreme weather events historically. Get the facts here, including data from the National Oceanic and Atmospheric Administration.

Data Updated Jul 1

Explore by topic:
State Selector:
National

Where do climate metrics differ from 20th century averages?

Climate is made up of weather conditions over time. Temperature and precipitation are two of the main ways people experience climate. Explore the map below to learn more about how these factors intersect in different counties across the country.

July
2021
How does July, 2021 compare to the 20th century average on both temperature and precipitation?
HOT/DRY
HOT
HOT/WET
WET
AVERAGE
DRY
COLD/DRY
COLD
COLD/WET

In July, 2021, 13 Million Americans lived in counties where it was both hotter and drier than the 20th Century average for July.

Temperature

July
2021

Where in the US is the temperature above or below average?

Maricopa County, AZ
Largest Difference
Warmer
Mashall County, CO
Largest Difference
Colder

In July, 2021, 25% of counties in the United States experienced average monthly temperatures below the 20th century average. For the same time period, 30% of counties in the United States experienced average monthly temperatures above the 20th century average. 45% of counties experienced average monthly temperatures that were average for the 20th century.

How many people in the US experience temperatures above or below average?

19.9M
Warmer
2019 population
10M
Cooler
2019 Population

Based on 2019 population data, in July, 2021, 100 million people in the United States would have experienced average monthly temperatures below the 20th century average. During the same time period, 50 million people in the United States would have experienced average monthly temperatures above the 20th century average. 150 million people in the United States would have experienced average temperatures.

Temperature and Demographics

Based on current population numbers, in July, 2021, 30% of Asian Americans would have lived in regions where the temperature was hotter than the 20th century average for April. Charts below show populations living in counties grouped by average temperature from normal in April 2021

hispanic/latino
white
american indian/alaska native
black
asian
native hawaiian/pacific islander
NEWSLETTER
Data delivered to your inbox
Keep up with the latest data and most popular content
NEWSLETTER
Data delivered to your inbox

Keep up with the latest data and most popular content.

NEWSLETTER
Data delivered to your inbox

Keep up with the latest data and most popular content.