Regional Rankings

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Month:

Region:

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 1981

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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 1981 1-Month	1.27" (32.26mm)	0.92" (23.37mm)	0.35" (8.89mm)	97th Driest	Driest since: 1979	1924
May 1981 1-Month	1.27" (32.26mm)	0.92" (23.37mm)	0.35" (8.89mm)	32nd Wettest	Wettest since: 1980	1998
Apr–May 1981 2-Month	2.15" (54.61mm)	2.26" (57.40mm)	-0.11" (-2.79mm)	65th Driest	Driest since: 1979	1909
Apr–May 1981 2-Month	2.15" (54.61mm)	2.26" (57.40mm)	-0.11" (-2.79mm)	64th Wettest	Wettest since: 1980	1896
Mar–May 1981 3-Month	5.27" (133.86mm)	4.59" (116.59mm)	0.68" (17.27mm)	93rd Driest	Driest since: 1980	2008
Mar–May 1981 3-Month	5.27" (133.86mm)	4.59" (116.59mm)	0.68" (17.27mm)	36th Wettest	Wettest since: 1978	1995
Feb–May 1981 4-Month	6.69" (169.93mm)	7.31" (185.67mm)	-0.62" (-15.74mm)	63rd Driest	Driest since: 1977	1997
Feb–May 1981 4-Month	6.69" (169.93mm)	7.31" (185.67mm)	-0.62" (-15.74mm)	66th Wettest	Wettest since: 1980	1998
Jan–May 1981 5-Month	9.60" (243.84mm)	10.29" (261.37mm)	-0.69" (-17.53mm)	65th Driest	Driest since: 1977	2022
Jan–May 1981 5-Month	9.60" (243.84mm)	10.29" (261.37mm)	-0.69" (-17.53mm)	64th Wettest	Wettest since: 1980	1998
Dec 1980–May 1981 6-Month	11.31" (287.27mm)	12.84" (326.14mm)	-1.53" (-38.87mm)	56th Driest	Driest since: 1977	1924
Dec 1980–May 1981 6-Month	11.31" (287.27mm)	12.84" (326.14mm)	-1.53" (-38.87mm)	72nd Wettest	Wettest since: 1980	1995
Nov 1980–May 1981 7-Month	11.95" (303.53mm)	14.71" (373.63mm)	-2.76" (-70.10mm)	42nd Driest	Driest since: 1977	1977
Nov 1980–May 1981 7-Month	11.95" (303.53mm)	14.71" (373.63mm)	-2.76" (-70.10mm)	86th Wettest	Wettest since: 1980	1995
Oct 1980–May 1981 8-Month	12.41" (315.21mm)	15.74" (399.80mm)	-3.33" (-84.59mm)	37th Driest	Driest since: 1977	1977
Oct 1980–May 1981 8-Month	12.41" (315.21mm)	15.74" (399.80mm)	-3.33" (-84.59mm)	91st Wettest	Wettest since: 1980	1983
Sep 1980–May 1981 9-Month	13.00" (330.20mm)	16.23" (412.24mm)	-3.23" (-82.04mm)	40th Driest	Driest since: 1977	2021
Sep 1980–May 1981 9-Month	13.00" (330.20mm)	16.23" (412.24mm)	-3.23" (-82.04mm)	88th Wettest	Wettest since: 1980	1983
Aug 1980–May 1981 10-Month	13.11" (332.99mm)	16.62" (422.15mm)	-3.51" (-89.16mm)	36th Driest	Driest since: 1977	2021
Aug 1980–May 1981 10-Month	13.11" (332.99mm)	16.62" (422.15mm)	-3.51" (-89.16mm)	92nd Wettest	Wettest since: 1980	1983
Jul 1980–May 1981 11-Month	13.55" (344.17mm)	16.95" (430.53mm)	-3.40" (-86.36mm)	35th Driest	Driest since: 1977	2021
Jul 1980–May 1981 11-Month	13.55" (344.17mm)	16.95" (430.53mm)	-3.40" (-86.36mm)	93rd Wettest	Wettest since: 1980	1983
Jun 1980–May 1981 12-Month	13.99" (355.35mm)	17.44" (442.98mm)	-3.45" (-87.63mm)	36th Driest	Driest since: 1977	2021
Jun 1980–May 1981 12-Month	13.99" (355.35mm)	17.44" (442.98mm)	-3.45" (-87.63mm)	92nd Wettest	Wettest since: 1980	1983
Dec 1979–May 1981 18-Month	31.18" (791.97mm)	30.25" (768.35mm)	0.93" (23.62mm)	80th Driest	Driest since: 1977	1977
Dec 1979–May 1981 18-Month	31.18" (791.97mm)	30.25" (768.35mm)	0.93" (23.62mm)	47th Wettest	Wettest since: 1980	1983
Jun 1979–May 1981 24-Month	36.42" (925.07mm)	34.89" (886.21mm)	1.53" (38.86mm)	84th Driest	Driest since: 1977	2022
Jun 1979–May 1981 24-Month	36.42" (925.07mm)	34.89" (886.21mm)	1.53" (38.86mm)	43rd Wettest	Wettest since: 1980	1983
Jun 1978–May 1981 36-Month	52.96" (1,345.18mm)	52.30" (1,328.42mm)	0.66" (16.76mm)	75th Driest	Driest since: 1978	2022
Jun 1978–May 1981 36-Month	52.96" (1,345.18mm)	52.30" (1,328.42mm)	0.66" (16.76mm)	51st Wettest	Wettest since: 1980	1984
Jun 1977–May 1981 48-Month	79.01" (2,006.85mm)	69.56" (1,766.82mm)	9.45" (240.03mm)	107th Driest	Driest since: 1980	2015
Jun 1977–May 1981 48-Month	79.01" (2,006.85mm)	69.56" (1,766.82mm)	9.45" (240.03mm)	18th Wettest	Wettest since: 1944	1998
Jun 1976–May 1981 60-Month	89.59" (2,275.59mm)	86.83" (2,205.48mm)	2.76" (70.11mm)	82nd Driest	Driest since: 1980	1933
Jun 1976–May 1981 60-Month	89.59" (2,275.59mm)	86.83" (2,205.48mm)	2.76" (70.11mm)	42nd Wettest	Wettest since: 1973	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published May 2023, retrieved on May 30, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings