/Issued 12:10 PM CDT, Tuesday, September 17, 2013/
Much of the U.S. had cooler temperatures during Summer 2013 compared to Summer 2012. The only area that had warmer than average temperatures this summer compared to last summer was the Pacific Northwest, south into parts of California.
Average precipitation differences between Summer 2013 and Summer 2012.
Brown=Drier than average.
Green=Wetter than average.
August 2013 and summer 2013 climate data
Source: Climate Prediction Center/NOAA/NCDC
*Average temperature in the U.S.: 73.1 degrees. 1.0 degree above the 20th century average. The 28th warmest such month on record.
*Idaho had its 2nd warmest August and Wyoming tied its 3rd warmest August.
*California, Georgia, and Kansas each experienced a top 10 wet August.
*Illinois, Indiana, Iowa, and Minnesota each had a top 10 dry August.
August 2013 statewide temperature rankings.
Blue=Cooler than average temperatures.
Orange=Warmer than average temperatures.
August 2013 divisional ranks for precipitation. All of Minnesota was either below normal or much below normal. Parts of Western Illinois and Southeast Iowa had its record driest August.
Significant events for August and Summer 2013
Summer (June – August 2013) climate data:
*Average temperature in the U.S.: 72.6 degrees. 1.2 degrees above the 20th century average and the 15th warmest summer on record for the nation.
*8 states from New Mexico to Washington had seasonal temperatures which ranked in the ten warmest on record. In the Northeast, 4 states had one of their 10 warmest summers on record.
*19 states in the Eastern U.S. had one of the ten wettest summer periods on record. Florida, Georgia, South Carolina, and New York each experienced record breaking statewide precipitation totals during the season.
*Summer 2013 had about 1670 stations with at least one 100 degree day vs. 4410 in 2012. About 57.7 million people were affected by 10 or more days at or above 100F compared to 99.1 million in 2012.
*Summer 2012 was the 2nd warmest with an average temperature of 73.6 degrees. Summer 2013 had an average temperature of 72.6 degrees and was the 15th warmest.
June – August 2013 summer temperature rankings.
June – August 2013 summer precipitation rankings.
The map below is a comparison of number of 100 degree days from summer of 2012 (left image) and the summer of 2013 (right image)
Here’s a few selected significant events from August 2013
Corn condition graph for the Midwest as of September 1, 2013. Even though it’s been quite dry as of late, the bulk of the corn remains in fair to good condition across the Midwest.