National Climate Report - September 2019
County Extremes

« National Climate Report - September 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 September, July-September and January-September. 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.

1-month

CATEGORYCOUNTYVALUERANK
ColdestTeton County, WY47.7 °F75
Driest
Multiple other counties not listed
Kings County, CA
San Luis Obispo County, CA
0.00 inch1
WarmestMaverick County, TX86.6 °F124
Yuma County, AZ86.6 °F100
WettestJefferson County, TX19.46 inches125
Coldest Departure from MeanDel Norte County, CA-3.4 °F4
Driest Departure from MeanFranklin County, FL-6.72 inches1
Warmest Departure from MeanLeflore County, MS8.6 °F125
Wettest Departure from MeanJefferson County, TX14.68 inches125

3-month

CATEGORYCOUNTYVALUERANK
ColdestSan Juan County, CO52.6 °F124
DriestKings County, CA
San Luis Obispo County, CA
0.00 inch1
WarmestImperial County, CA91.2 °F109
Yuma County, AZ91.2 °F119
WettestJefferson County, TX30.95 inches123
Coldest Departure from MeanGolden Valley County, MT-0.9 °F32
Driest Departure from MeanChatham County, GA-8.79 inches2
Warmest Departure from MeanWinkler County, TX
Loving County, TX
5.9 °F125
Wettest Departure from MeanJefferson County, TX16.51 inches123

YTD

CATEGORYCOUNTYVALUERANK
ColdestLake County, CO37.4 °F92
DriestImperial County, CA2.20 inches71
WarmestMonroe County, FL79.3 °F125
WettestJefferson County, TX65.60 inches122
Coldest Departure from MeanGolden Valley County, MT-3.5 °F5
McIntosh County, ND-3.5 °F10
Driest Departure from MeanGrays Harbor County, WA-19.16 inches3
Warmest Departure from MeanPickett County, TN
Fentress County, TN
4.1 °F125
Wettest Departure from MeanOttawa County, OK27.76 inches125

Citing This Report

NOAA National Centers for Environmental Information, State of the Climate: National Climate Report for September 2019, published online October 2019, retrieved on October 13, 2019 from https://www.ncdc.noaa.gov/sotc/national/201909/supplemental/page-10.

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