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Federal
Change in Snowfall
U.S. Environmental Protection Agency —
This indicator shows the average rate of change in total snowfall from 1930 to 2007 at 419 weather stations in the contiguous 48 states. Blue circles represent... -
Federal
Change in Unusually Hot and Cold Temperatures in the Contiguous 48 States, 1948–2023
U.S. Environmental Protection Agency —
This map shows trends in unusually hot and cold temperatures at individual weather stations that have operated consistently since 1948. In this case, the term... -
Federal
Change in Growing Degree Days in the Contiguous 48 States, 1948–2020
U.S. Environmental Protection Agency —
This map shows trends in the total number of growing degree days per year at 305 weather stations . The color and size of the symbols represent percent change between... -
Federal
Change in First Leaf and Bloom Dates Between 1951–1960 and 2014–2023
U.S. Environmental Protection Agency —
This indicator shows modeled trends in lilac and honeysuckle first leaf dates at weather stations across the contiguous 48 states. This map compares the average first...