Statewide Rankings

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Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

California

Precipitation Rankings, September 2015

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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
September 2015 1-Month	0.33" (8.38mm)	0.45" (11.43mm)	-0.12" (-3.05mm)	72nd Driest	Driest since: 2012	1974
	0.33" (8.38mm)	0.45" (11.43mm)	-0.12" (-3.05mm)	57th Wettest	Wettest since: 2014	1918
	Ties: 1914, 1934
Aug–Sep 2015 2-Month	0.41" (10.41mm)	0.69" (17.53mm)	-0.28" (-7.12mm)	48th Driest	Driest since: 2012	1937, 2018
	0.41" (10.41mm)	0.69" (17.53mm)	-0.28" (-7.12mm)	81st Wettest	Wettest since: 2014	1983
	Ties: 1917
Jul–Sep 2015 3-Month	1.07" (27.18mm)	0.87" (22.10mm)	0.20" (5.08mm)	95th Driest	Driest since: 2012	1928
	1.07" (27.18mm)	0.87" (22.10mm)	0.20" (5.08mm)	34th Wettest	Wettest since: 2014	1976
	Ties: 1979, 1998
Jun–Sep 2015 4-Month	1.30" (33.02mm)	1.22" (30.99mm)	0.08" (2.03mm)	80th Driest	Driest since: 2012	2002
	1.30" (33.02mm)	1.22" (30.99mm)	0.08" (2.03mm)	49th Wettest	Wettest since: 2014	1982
	Ties: 1941
May–Sep 2015 5-Month	2.23" (56.64mm)	2.10" (53.34mm)	0.13" (3.30mm)	82nd Driest	Driest since: 2014	1924
May–Sep 2015 5-Month	2.23" (56.64mm)	2.10" (53.34mm)	0.13" (3.30mm)	47th Wettest	Wettest since: 2013	1998
Apr–Sep 2015 6-Month	3.29" (83.57mm)	3.74" (95.00mm)	-0.45" (-11.43mm)	58th Driest	Driest since: 2014	1924
Apr–Sep 2015 6-Month	3.29" (83.57mm)	3.74" (95.00mm)	-0.45" (-11.43mm)	71st Wettest	Wettest since: 2012	1896
Mar–Sep 2015 7-Month	4.07" (103.38mm)	6.95" (176.53mm)	-2.88" (-73.15mm)	10th Driest	Driest since: 2008	2008
Mar–Sep 2015 7-Month	4.07" (103.38mm)	6.95" (176.53mm)	-2.88" (-73.15mm)	119th Wettest	Wettest since: 2014	1995
Feb–Sep 2015 8-Month	6.93" (176.02mm)	10.80" (274.32mm)	-3.87" (-98.30mm)	19th Driest	Driest since: 2013	2021
Feb–Sep 2015 8-Month	6.93" (176.02mm)	10.80" (274.32mm)	-3.87" (-98.30mm)	110th Wettest	Wettest since: 2014	1998
Jan–Sep 2015 9-Month	7.58" (192.53mm)	15.05" (382.27mm)	-7.47" (-189.74mm)	5th Driest	Driest since: 2013	2022
Jan–Sep 2015 9-Month	7.58" (192.53mm)	15.05" (382.27mm)	-7.47" (-189.74mm)	124th Wettest	Wettest since: 2014	1998
Dec 2014–Sep 2015 10-Month	13.88" (352.55mm)	18.67" (474.22mm)	-4.79" (-121.67mm)	30th Driest	Driest since: 2014	1924
Dec 2014–Sep 2015 10-Month	13.88" (352.55mm)	18.67" (474.22mm)	-4.79" (-121.67mm)	98th Wettest	Wettest since: 2011	1983
Nov 2014–Sep 2015 11-Month	15.72" (399.29mm)	21.25" (539.75mm)	-5.53" (-140.46mm)	27th Driest	Driest since: 2014	1924
	15.72" (399.29mm)	21.25" (539.75mm)	-5.53" (-140.46mm)	101st Wettest	Wettest since: 2013	1983
	Ties: 2008
Oct 2014–Sep 2015 12-Month	16.78" (426.21mm)	22.45" (570.23mm)	-5.67" (-144.02mm)	29th Driest	Driest since: 2014	1924
Oct 2014–Sep 2015 12-Month	16.78" (426.21mm)	22.45" (570.23mm)	-5.67" (-144.02mm)	99th Wettest	Wettest since: 2013	1983
Apr 2014–Sep 2015 18-Month	19.64" (498.86mm)	26.19" (665.23mm)	-6.55" (-166.37mm)	20th Driest	Driest since: 2014	2021
Apr 2014–Sep 2015 18-Month	19.64" (498.86mm)	26.19" (665.23mm)	-6.55" (-166.37mm)	108th Wettest	Wettest since: 2013	1983
Oct 2013–Sep 2015 24-Month	29.17" (740.92mm)	44.90" (1,140.46mm)	-15.73" (-399.54mm)	4th Driest	Driest since: 1977	1977
Oct 2013–Sep 2015 24-Month	29.17" (740.92mm)	44.90" (1,140.46mm)	-15.73" (-399.54mm)	123rd Wettest	Wettest since: 2014	1983
Oct 2012–Sep 2015 36-Month	46.12" (1,171.45mm)	67.32" (1,709.93mm)	-21.20" (-538.48mm)	3rd Driest	Driest since: 2014	2022
Oct 2012–Sep 2015 36-Month	46.12" (1,171.45mm)	67.32" (1,709.93mm)	-21.20" (-538.48mm)	123rd Wettest	Wettest since: 2013	1984
Oct 2011–Sep 2015 48-Month	62.56" (1,589.02mm)	89.51" (2,273.55mm)	-26.95" (-684.53mm)	1st Driest	Driest since: 2015	2015
Oct 2011–Sep 2015 48-Month	62.56" (1,589.02mm)	89.51" (2,273.55mm)	-26.95" (-684.53mm)	124th Wettest	Wettest since: 2014	1998
Oct 2010–Sep 2015 60-Month	91.38" (2,321.05mm)	111.69" (2,836.93mm)	-20.31" (-515.88mm)	8th Driest	Driest since: 1992	1991
Oct 2010–Sep 2015 60-Month	91.38" (2,321.05mm)	111.69" (2,836.93mm)	-20.31" (-515.88mm)	116th Wettest	Wettest since: 2014	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings