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, July 2010

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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
July 2010 1-Month	3.32" (84.33mm)	2.78" (70.61mm)	0.54" (13.72mm)	120th Driest	Driest since: 2009	1930
July 2010 1-Month	3.32" (84.33mm)	2.78" (70.61mm)	0.54" (13.72mm)	9th Wettest	Wettest since: 1992	1950, 1958
Jun–Jul 2010 2-Month	6.81" (172.97mm)	5.70" (144.78mm)	1.11" (28.19mm)	122nd Driest	Driest since: 2009	1930
Jun–Jul 2010 2-Month	6.81" (172.97mm)	5.70" (144.78mm)	1.11" (28.19mm)	7th Wettest	Wettest since: 1993	1928
May–Jul 2010 3-Month	10.13" (257.30mm)	8.62" (218.95mm)	1.51" (38.35mm)	122nd Driest	Driest since: 2009	1988
May–Jul 2010 3-Month	10.13" (257.30mm)	8.62" (218.95mm)	1.51" (38.35mm)	7th Wettest	Wettest since: 1957	2015
Apr–Jul 2010 4-Month	12.51" (317.75mm)	11.13" (282.70mm)	1.38" (35.05mm)	114th Driest	Driest since: 2009	1934
Apr–Jul 2010 4-Month	12.51" (317.75mm)	11.13" (282.70mm)	1.38" (35.05mm)	15th Wettest	Wettest since: 1995	2015
Mar–Jul 2010 5-Month	14.81" (376.17mm)	13.64" (346.46mm)	1.17" (29.71mm)	106th Driest	Driest since: 2008	1936
Mar–Jul 2010 5-Month	14.81" (376.17mm)	13.64" (346.46mm)	1.17" (29.71mm)	23rd Wettest	Wettest since: 2009	1973
Feb–Jul 2010 6-Month	16.82" (427.23mm)	15.78" (400.81mm)	1.04" (26.42mm)	96th Driest	Driest since: 2009	1934
Feb–Jul 2010 6-Month	16.82" (427.23mm)	15.78" (400.81mm)	1.04" (26.42mm)	33rd Wettest	Wettest since: 2004	2019
Jan–Jul 2010 7-Month	19.44" (493.78mm)	18.09" (459.49mm)	1.35" (34.29mm)	105th Driest	Driest since: 2009	1934
Jan–Jul 2010 7-Month	19.44" (493.78mm)	18.09" (459.49mm)	1.35" (34.29mm)	24th Wettest	Wettest since: 1998	2019
Dec 2009–Jul 2010 8-Month	22.52" (572.01mm)	20.44" (519.18mm)	2.08" (52.83mm)	113th Driest	Driest since: 2009	1931
Dec 2009–Jul 2010 8-Month	22.52" (572.01mm)	20.44" (519.18mm)	2.08" (52.83mm)	15th Wettest	Wettest since: 1998	2019
Nov 2009–Jul 2010 9-Month	24.15" (613.41mm)	22.66" (575.56mm)	1.49" (37.85mm)	99th Driest	Driest since: 2009	1934
Nov 2009–Jul 2010 9-Month	24.15" (613.41mm)	22.66" (575.56mm)	1.49" (37.85mm)	29th Wettest	Wettest since: 1998	2019
Oct 2009–Jul 2010 10-Month	28.44" (722.38mm)	24.83" (630.68mm)	3.61" (91.70mm)	121st Driest	Driest since: 2009	1934
Oct 2009–Jul 2010 10-Month	28.44" (722.38mm)	24.83" (630.68mm)	3.61" (91.70mm)	7th Wettest	Wettest since: 1995	2019
Sep 2009–Jul 2010 11-Month	30.98" (786.89mm)	27.33" (694.18mm)	3.65" (92.71mm)	121st Driest	Driest since: 2009	1934
Sep 2009–Jul 2010 11-Month	30.98" (786.89mm)	27.33" (694.18mm)	3.65" (92.71mm)	7th Wettest	Wettest since: 1997	2019
Aug 2009–Jul 2010 12-Month	33.67" (855.22mm)	29.95" (760.73mm)	3.72" (94.49mm)	121st Driest	Driest since: 2009	1918
Aug 2009–Jul 2010 12-Month	33.67" (855.22mm)	29.95" (760.73mm)	3.72" (94.49mm)	7th Wettest	Wettest since: 1997	2019
Feb 2009–Jul 2010 18-Month	50.14" (1,273.56mm)	45.74" (1,161.80mm)	4.40" (111.76mm)	115th Driest	Driest since: 2009	1931
Feb 2009–Jul 2010 18-Month	50.14" (1,273.56mm)	45.74" (1,161.80mm)	4.40" (111.76mm)	13th Wettest	Wettest since: 1998	2019
Aug 2008–Jul 2010 24-Month	64.44" (1,636.78mm)	59.92" (1,521.97mm)	4.52" (114.81mm)	111th Driest	Driest since: 2009	1918
Aug 2008–Jul 2010 24-Month	64.44" (1,636.78mm)	59.92" (1,521.97mm)	4.52" (114.81mm)	16th Wettest	Wettest since: 1999	2020
Aug 2007–Jul 2010 36-Month	94.84" (2,408.94mm)	89.88" (2,282.95mm)	4.96" (125.99mm)	105th Driest	Driest since: 2009	1956
Aug 2007–Jul 2010 36-Month	94.84" (2,408.94mm)	89.88" (2,282.95mm)	4.96" (125.99mm)	21st Wettest	Wettest since: 2005	2019
Aug 2006–Jul 2010 48-Month	125.69" (3,192.53mm)	119.78" (3,042.41mm)	5.91" (150.12mm)	102nd Driest	Driest since: 2009	1956
Aug 2006–Jul 2010 48-Month	125.69" (3,192.53mm)	119.78" (3,042.41mm)	5.91" (150.12mm)	23rd Wettest	Wettest since: 2000	2019
Aug 2005–Jul 2010 60-Month	153.79" (3,906.27mm)	149.64" (3,800.86mm)	4.15" (105.41mm)	86th Driest	Driest since: 2009	1934
Aug 2005–Jul 2010 60-Month	153.79" (3,906.27mm)	149.64" (3,800.86mm)	4.15" (105.41mm)	38th Wettest	Wettest since: 2007	2019

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: National Rankings, published March 2023, retrieved on March 23, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/national/rankings