National Rankings

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Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Contiguous U.S.

Precipitation Rankings, April 2017

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Record Driest
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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2023)	Wettest/Driest Since	Record
April 2017 1-Month	3.50" (88.90mm)	2.52" (64.01mm)	0.98" (24.89mm)	128th Driest	Driest since: 2016	1987
April 2017 1-Month	3.50" (88.90mm)	2.52" (64.01mm)	0.98" (24.89mm)	2nd Wettest	Wettest since: 1957	1957
Mar–Apr 2017 2-Month	6.09" (154.69mm)	5.03" (127.76mm)	1.06" (26.93mm)	119th Driest	Driest since: 2016	1910
Mar–Apr 2017 2-Month	6.09" (154.69mm)	5.03" (127.76mm)	1.06" (26.93mm)	11th Wettest	Wettest since: 2011	1973
Feb–Apr 2017 3-Month	8.34" (211.84mm)	7.16" (181.86mm)	1.18" (29.98mm)	116th Driest	Driest since: 2016	1910
Feb–Apr 2017 3-Month	8.34" (211.84mm)	7.16" (181.86mm)	1.18" (29.98mm)	14th Wettest	Wettest since: 1998	1983
Jan–Apr 2017 4-Month	11.58" (294.13mm)	9.48" (240.79mm)	2.10" (53.34mm)	125th Driest	Driest since: 2016	1910
Jan–Apr 2017 4-Month	11.58" (294.13mm)	9.48" (240.79mm)	2.10" (53.34mm)	5th Wettest	Wettest since: 1998	1998
Dec 2016–Apr 2017 5-Month	14.30" (363.22mm)	11.82" (300.23mm)	2.48" (62.99mm)	123rd Driest	Driest since: 2016	1931
Dec 2016–Apr 2017 5-Month	14.30" (363.22mm)	11.82" (300.23mm)	2.48" (62.99mm)	6th Wettest	Wettest since: 1998	1983
Nov 2016–Apr 2017 6-Month	16.05" (407.67mm)	14.05" (356.87mm)	2.00" (50.80mm)	116th Driest	Driest since: 2015	1977
Nov 2016–Apr 2017 6-Month	16.05" (407.67mm)	14.05" (356.87mm)	2.00" (50.80mm)	13th Wettest	Wettest since: 2016	1983
Oct 2016–Apr 2017 7-Month	18.44" (468.38mm)	16.22" (411.99mm)	2.22" (56.39mm)	117th Driest	Driest since: 2015	1981
Oct 2016–Apr 2017 7-Month	18.44" (468.38mm)	16.22" (411.99mm)	2.22" (56.39mm)	12th Wettest	Wettest since: 2016	1983
Sep 2016–Apr 2017 8-Month	21.17" (537.72mm)	18.71" (475.23mm)	2.46" (62.49mm)	117th Driest	Driest since: 2015	1918
Sep 2016–Apr 2017 8-Month	21.17" (537.72mm)	18.71" (475.23mm)	2.46" (62.49mm)	12th Wettest	Wettest since: 2016	2019
Aug 2016–Apr 2017 9-Month	24.64" (625.86mm)	21.33" (541.78mm)	3.31" (84.08mm)	122nd Driest	Driest since: 2015	1918
Aug 2016–Apr 2017 9-Month	24.64" (625.86mm)	21.33" (541.78mm)	3.31" (84.08mm)	7th Wettest	Wettest since: 2016	2019
Jul 2016–Apr 2017 10-Month	27.56" (700.02mm)	24.12" (612.65mm)	3.44" (87.37mm)	122nd Driest	Driest since: 2015	1931
Jul 2016–Apr 2017 10-Month	27.56" (700.02mm)	24.12" (612.65mm)	3.44" (87.37mm)	7th Wettest	Wettest since: 2016	2019
Jun 2016–Apr 2017 11-Month	30.04" (763.02mm)	27.04" (686.82mm)	3.00" (76.20mm)	118th Driest	Driest since: 2015	1931
Jun 2016–Apr 2017 11-Month	30.04" (763.02mm)	27.04" (686.82mm)	3.00" (76.20mm)	11th Wettest	Wettest since: 2016	2019
May 2016–Apr 2017 12-Month	33.11" (840.99mm)	29.95" (760.73mm)	3.16" (80.26mm)	116th Driest	Driest since: 2015	1918
May 2016–Apr 2017 12-Month	33.11" (840.99mm)	29.95" (760.73mm)	3.16" (80.26mm)	13th Wettest	Wettest since: 2016	2019
Nov 2015–Apr 2017 18-Month	50.41" (1,280.41mm)	44.02" (1,118.11mm)	6.39" (162.30mm)	123rd Driest	Driest since: 2016	1931
Nov 2015–Apr 2017 18-Month	50.41" (1,280.41mm)	44.02" (1,118.11mm)	6.39" (162.30mm)	5th Wettest	Wettest since: 1998	2020
May 2015–Apr 2017 24-Month	69.06" (1,754.12mm)	59.92" (1,521.97mm)	9.14" (232.15mm)	126th Driest	Driest since: 2016	1955
May 2015–Apr 2017 24-Month	69.06" (1,754.12mm)	59.92" (1,521.97mm)	9.14" (232.15mm)	2nd Wettest	Wettest to Date	2020
May 2014–Apr 2017 36-Month	99.57" (2,529.08mm)	89.88" (2,282.95mm)	9.69" (246.13mm)	120th Driest	Driest since: 2016	1955
May 2014–Apr 2017 36-Month	99.57" (2,529.08mm)	89.88" (2,282.95mm)	9.69" (246.13mm)	7th Wettest	Wettest since: 1999	2020
May 2013–Apr 2017 48-Month	130.49" (3,314.45mm)	119.77" (3,042.16mm)	10.72" (272.29mm)	120th Driest	Driest since: 2016	1956
May 2013–Apr 2017 48-Month	130.49" (3,314.45mm)	119.77" (3,042.16mm)	10.72" (272.29mm)	6th Wettest	Wettest since: 1999	2019
May 2012–Apr 2017 60-Month	157.99" (4,012.95mm)	149.63" (3,800.60mm)	8.36" (212.35mm)	107th Driest	Driest since: 2016	1957
May 2012–Apr 2017 60-Month	157.99" (4,012.95mm)	149.63" (3,800.60mm)	8.36" (212.35mm)	18th Wettest	Wettest since: 2000	2020

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published June 2023, retrieved on June 10, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings