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Winter Precipitation Trends
A graphical look at how winter precipitation has been trending across the U.S. from 1970 to 2013.
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Frost Free Season is Getting Longer
All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring and the first in the fall, grow longer.
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Fall Temperature Trends
The big picture is clear: Overall, fall is warming across the U.S, 0.46F per decade since 1970.
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Fall Precipitation Trends
Fall precipitation has changed since the early 1970s, but unlike fall temperatures, the changes form more of a patchwork story.
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Hottest Days of Summer
The hottest time of year in the continental U.S. statistically comes in mid-July, but the timing of peak heat varies across different parts of the country.
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Summer Precipitation Trends
When it comes to summertime precip., the wet are getting wetter and the dry are getting drier.
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Changing Rainfall Patterns in the U.S.
Since 1900, the average annual precipitation is up 5 percent for the continental U.S.
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Extreme Precipitation Events are on the Rise
Heavy downpours have increased in every region of the contiguous states since 1950.
