Regional Rankings

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Please note, Palmer Indices are not available for NWS Regions. 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 1907

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
May 1907 1-Month	0.79" (20.07mm)	0.92" (23.37mm)	-0.13" (-3.30mm)	68th Driest	Driest since: 1904	1924
	0.79" (20.07mm)	0.92" (23.37mm)	-0.13" (-3.30mm)	61st Wettest	Wettest since: 1906	1998
	Ties: 1960, 1979
Apr–May 1907 2-Month	1.71" (43.43mm)	2.26" (57.40mm)	-0.55" (-13.97mm)	47th Driest	Driest since: 1903	1909
Apr–May 1907 2-Month	1.71" (43.43mm)	2.26" (57.40mm)	-0.55" (-13.97mm)	82nd Wettest	Wettest since: 1906	1896
Mar–May 1907 3-Month	7.94" (201.68mm)	4.59" (116.59mm)	3.35" (85.09mm)	123rd Driest	Driest since: 1905	2008
Mar–May 1907 3-Month	7.94" (201.68mm)	4.59" (116.59mm)	3.35" (85.09mm)	6th Wettest	Wettest since: 1906	1995
Feb–May 1907 4-Month	10.59" (268.99mm)	7.31" (185.67mm)	3.28" (83.32mm)	116th Driest	Driest since: 1905	1997
Feb–May 1907 4-Month	10.59" (268.99mm)	7.31" (185.67mm)	3.28" (83.32mm)	13th Wettest	Wettest since: 1906	1998
Jan–May 1907 5-Month	15.45" (392.43mm)	10.29" (261.37mm)	5.16" (131.06mm)	118th Driest	Driest since: 1905	2022
Jan–May 1907 5-Month	15.45" (392.43mm)	10.29" (261.37mm)	5.16" (131.06mm)	11th Wettest	Wettest since: 1906	1998
Dec 1906–May 1907 6-Month	20.60" (523.24mm)	12.84" (326.14mm)	7.76" (197.10mm)	122nd Driest	Driest since: 1906	1924
Dec 1906–May 1907 6-Month	20.60" (523.24mm)	12.84" (326.14mm)	7.76" (197.10mm)	6th Wettest	Wettest to Date	1995
Nov 1906–May 1907 7-Month	22.14" (562.36mm)	14.71" (373.63mm)	7.43" (188.73mm)	121st Driest	Driest since: 1906	1977
Nov 1906–May 1907 7-Month	22.14" (562.36mm)	14.71" (373.63mm)	7.43" (188.73mm)	7th Wettest	Wettest to Date	1995
Oct 1906–May 1907 8-Month	22.25" (565.15mm)	15.74" (399.80mm)	6.51" (165.35mm)	118th Driest	Driest since: 1906	1977
Oct 1906–May 1907 8-Month	22.25" (565.15mm)	15.74" (399.80mm)	6.51" (165.35mm)	10th Wettest	Wettest to Date	1983
Sep 1906–May 1907 9-Month	22.56" (573.02mm)	16.23" (412.24mm)	6.33" (160.78mm)	119th Driest	Driest since: 1906	2021
Sep 1906–May 1907 9-Month	22.56" (573.02mm)	16.23" (412.24mm)	6.33" (160.78mm)	9th Wettest	Wettest to Date	1983
Aug 1906–May 1907 10-Month	23.22" (589.79mm)	16.62" (422.15mm)	6.60" (167.64mm)	119th Driest	Driest since: 1906	2021
Aug 1906–May 1907 10-Month	23.22" (589.79mm)	16.62" (422.15mm)	6.60" (167.64mm)	9th Wettest	Wettest to Date	1983
Jul 1906–May 1907 11-Month	23.56" (598.42mm)	16.95" (430.53mm)	6.61" (167.89mm)	120th Driest	Driest since: 1906	2021
Jul 1906–May 1907 11-Month	23.56" (598.42mm)	16.95" (430.53mm)	6.61" (167.89mm)	8th Wettest	Wettest to Date	1983
Jun 1906–May 1907 12-Month	24.32" (617.73mm)	17.44" (442.98mm)	6.88" (174.75mm)	120th Driest	Driest since: 1906	2021
Jun 1906–May 1907 12-Month	24.32" (617.73mm)	17.44" (442.98mm)	6.88" (174.75mm)	8th Wettest	Wettest to Date	1983
Dec 1905–May 1907 18-Month	42.21" (1,072.13mm)	30.25" (768.35mm)	11.96" (303.78mm)	123rd Driest	Driest since: 1906	1977
Dec 1905–May 1907 18-Month	42.21" (1,072.13mm)	30.25" (768.35mm)	11.96" (303.78mm)	4th Wettest	Wettest to Date	1983
Jun 1905–May 1907 24-Month	45.13" (1,146.30mm)	34.89" (886.21mm)	10.24" (260.09mm)	118th Driest	Driest since: 1906	2022
Jun 1905–May 1907 24-Month	45.13" (1,146.30mm)	34.89" (886.21mm)	10.24" (260.09mm)	9th Wettest	Wettest to Date	1983
Jun 1904–May 1907 36-Month	64.41" (1,636.01mm)	52.30" (1,328.42mm)	12.11" (307.59mm)	116th Driest	Driest since: 1906	2022
Jun 1904–May 1907 36-Month	64.41" (1,636.01mm)	52.30" (1,328.42mm)	12.11" (307.59mm)	10th Wettest	Wettest to Date	1984
Jun 1903–May 1907 48-Month	84.12" (2,136.65mm)	69.56" (1,766.82mm)	14.56" (369.83mm)	117th Driest	Driest since: 1906	2015
Jun 1903–May 1907 48-Month	84.12" (2,136.65mm)	69.56" (1,766.82mm)	14.56" (369.83mm)	8th Wettest	Wettest to Date	1998
Jun 1902–May 1907 60-Month	100.91" (2,563.11mm)	86.83" (2,205.48mm)	14.08" (357.63mm)	112th Driest	Driest since: 1906	1933
Jun 1902–May 1907 60-Month	100.91" (2,563.11mm)	86.83" (2,205.48mm)	14.08" (357.63mm)	12th Wettest	Wettest to Date	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Regional Rankings, published January 2023, retrieved on February 2, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/regional/rankings