Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. Degree Days are not available for Great Plains, Souther Plains and Gulf Coast Rockies and Westward, River Basins, or Agricultural Belts. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

West Climate Region

Precipitation Rankings, May 1902

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1902 1-Month	0.73" (18.54mm)	0.92" (23.37mm)	-0.19" (-4.83mm)	59th Driest	Driest since: 1897	1924
	0.73" (18.54mm)	0.92" (23.37mm)	-0.19" (-4.83mm)	70th Wettest	Wettest since: 1901	1998
	Ties: 1931, 1967, 2008
Apr–May 1902 2-Month	2.24" (56.90mm)	2.26" (57.40mm)	-0.02" (-0.50mm)	70th Driest	Driest since: 1899	1909
Apr–May 1902 2-Month	2.24" (56.90mm)	2.26" (57.40mm)	-0.02" (-0.50mm)	59th Wettest	Wettest since: 1901	1896
Mar–May 1902 3-Month	4.77" (121.16mm)	4.59" (116.59mm)	0.18" (4.57mm)	74th Driest	Driest since: 1901	2008
Mar–May 1902 3-Month	4.77" (121.16mm)	4.59" (116.59mm)	0.18" (4.57mm)	55th Wettest	Wettest since: 1900	1995
Feb–May 1902 4-Month	10.08" (256.03mm)	7.31" (185.67mm)	2.77" (70.36mm)	114th Driest	Driest since: 1901	1997
Feb–May 1902 4-Month	10.08" (256.03mm)	7.31" (185.67mm)	2.77" (70.36mm)	15th Wettest	Wettest to Date	1998
Jan–May 1902 5-Month	11.04" (280.42mm)	10.29" (261.37mm)	0.75" (19.05mm)	83rd Driest	Driest since: 1900	2022
	11.04" (280.42mm)	10.29" (261.37mm)	0.75" (19.05mm)	46th Wettest	Wettest since: 1901	1998
	Ties: 1897
Dec 1901–May 1902 6-Month	12.43" (315.72mm)	12.84" (326.14mm)	-0.41" (-10.42mm)	68th Driest	Driest since: 1900	1924
Dec 1901–May 1902 6-Month	12.43" (315.72mm)	12.84" (326.14mm)	-0.41" (-10.42mm)	60th Wettest	Wettest since: 1901	1995
Nov 1901–May 1902 7-Month	14.18" (360.17mm)	14.71" (373.63mm)	-0.53" (-13.46mm)	67th Driest	Driest since: 1900	1977
Nov 1901–May 1902 7-Month	14.18" (360.17mm)	14.71" (373.63mm)	-0.53" (-13.46mm)	61st Wettest	Wettest since: 1901	1995
Oct 1901–May 1902 8-Month	15.57" (395.48mm)	15.74" (399.80mm)	-0.17" (-4.32mm)	70th Driest	Driest since: 1900	1977
Oct 1901–May 1902 8-Month	15.57" (395.48mm)	15.74" (399.80mm)	-0.17" (-4.32mm)	58th Wettest	Wettest since: 1901	1983
Sep 1901–May 1902 9-Month	16.33" (414.78mm)	16.23" (412.24mm)	0.10" (2.54mm)	73rd Driest	Driest since: 1900	2021
Sep 1901–May 1902 9-Month	16.33" (414.78mm)	16.23" (412.24mm)	0.10" (2.54mm)	55th Wettest	Wettest since: 1901	1983
Aug 1901–May 1902 10-Month	17.14" (435.36mm)	16.62" (422.15mm)	0.52" (13.21mm)	76th Driest	Driest since: 1900	2021
Aug 1901–May 1902 10-Month	17.14" (435.36mm)	16.62" (422.15mm)	0.52" (13.21mm)	52nd Wettest	Wettest since: 1901	1983
Jul 1901–May 1902 11-Month	17.25" (438.15mm)	16.95" (430.53mm)	0.30" (7.62mm)	75th Driest	Driest since: 1900	2021
Jul 1901–May 1902 11-Month	17.25" (438.15mm)	16.95" (430.53mm)	0.30" (7.62mm)	53rd Wettest	Wettest since: 1901	1983
Jun 1901–May 1902 12-Month	17.34" (440.44mm)	17.44" (442.98mm)	-0.10" (-2.54mm)	72nd Driest	Driest since: 1900	2021
	17.34" (440.44mm)	17.44" (442.98mm)	-0.10" (-2.54mm)	56th Wettest	Wettest since: 1901	1983
	Ties: 1970
Dec 1900–May 1902 18-Month	29.97" (761.24mm)	30.25" (768.35mm)	-0.28" (-7.11mm)	69th Driest	Driest since: 1901	1977
Dec 1900–May 1902 18-Month	29.97" (761.24mm)	30.25" (768.35mm)	-0.28" (-7.11mm)	58th Wettest	Wettest since: 1897	1983
Jun 1900–May 1902 24-Month	36.39" (924.31mm)	34.89" (886.21mm)	1.50" (38.10mm)	83rd Driest	Driest since: 1901	2022
Jun 1900–May 1902 24-Month	36.39" (924.31mm)	34.89" (886.21mm)	1.50" (38.10mm)	44th Wettest	Wettest since: 1897	1983
Jun 1899–May 1902 36-Month	53.39" (1,356.11mm)	52.30" (1,328.42mm)	1.09" (27.69mm)	79th Driest	Driest since: 1901	2022
Jun 1899–May 1902 36-Month	53.39" (1,356.11mm)	52.30" (1,328.42mm)	1.09" (27.69mm)	47th Wettest	Wettest to Date	1984
Jun 1898–May 1902 48-Month	67.69" (1,719.33mm)	69.56" (1,766.82mm)	-1.87" (-47.49mm)	61st Driest	Driest since: 1901	2015
Jun 1898–May 1902 48-Month	67.69" (1,719.33mm)	69.56" (1,766.82mm)	-1.87" (-47.49mm)	64th Wettest	Wettest to Date	1998
Jun 1897–May 1902 60-Month	80.99" (2,057.15mm)	86.83" (2,205.48mm)	-5.84" (-148.33mm)	44th Driest	Driest to Date	1933
Jun 1897–May 1902 60-Month	80.99" (2,057.15mm)	86.83" (2,205.48mm)	-5.84" (-148.33mm)	80th Wettest	Wettest since: 1901	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published March 2023, retrieved on March 28, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings