National Climate Report - August 2019
County Extremes

« National Climate Report - August 2019

County Extremes

County level data can provide a more localized picture of weather and climate conditions. Previously, the smallest aggregated scale of nClimGrid consisted of nClimDiv, which is the climate division dataset, consisting of 344 specified divisions across the contiguous United States. Counties are typically smaller than divisions, which makes them ideal for smaller-scale analyses. Currently, there are more than 3,100 counties or county-equivalents across the contiguous United States.

County-level data can provide specific information that is useful for drought managers, university researchers, agriculture producers, and business leaders. Below are the counties that experienced the most extreme average temperature and total precipitation values in August, June-August and January-August. Each color represents a historical county rank for the time period. Shades of blue or red represent counties whose temperature values were cooler or warmer than their historical average. Shades of brown or green represent counties whose precipitation values were drier or wetter that their historical average. For more information on ranks, please see Climatological Rankings.


ColdestSan Juan County, CO54.2 °F124
Multiple other counties not listed
Alameda County, CA
Calaveras County, CA
0.00 inch1
WarmestImperial County, CA94.2 °F116
WettestDouglas County, KS14.59 inches125
Coldest Departure from MeanHughes County, SD-3.2 °F21
Driest Departure from MeanCalhoun County, SC-2.73 inches8
Warmest Departure from MeanWinkler County, TX7.5 °F125
Wettest Departure from MeanDouglas County, KS10.66 inches125


ColdestSan Juan County, CO52.1 °F114
Multiple other counties not listed
Alameda County, CA
Contra Costa County, CA
0.00 inch1
WarmestImperial County, CA91.3 °F109
WettestHillsborough County, FL33.45 inches119
Coldest Departure from MeanCowley County, KS-1.7 °F22
Vernon County, MO-1.7 °F23
Driest Departure from MeanMonroe County, AL
Onslow County, NC
-5.13 inches11
Warmest Departure from MeanChaves County, NM4.0 °F123
Wettest Departure from MeanBates County, MO12.96 inches124


ColdestCook County, MN35.4 °F23
DriestImperial County, CA1.63 inch52
WarmestMonroe County, FL78.4 °F125
WettestCurry County, OR60.03 inches99
Coldest Departure from MeanCampbell County, SD-4.0 °F7
Driest Departure from MeanGrays Harbor County, WA-21.25 inches2
Warmest Departure from MeanNorfolk City, VA
Fayette County, GA
3.8 °F125
Wettest Departure from MeanOttawa County, OK24.71 inches125

Citing This Report

NOAA National Centers for Environmental Information, State of the Climate: National Climate Report for August 2019, published online September 2019, retrieved on September 22, 2019 from