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 1948

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
September 1948 1-Month	0.40" (10.16mm)	0.45" (11.43mm)	-0.05" (-1.27mm)	80th Driest	Driest since: 1947	1974
September 1948 1-Month	0.40" (10.16mm)	0.45" (11.43mm)	-0.05" (-1.27mm)	49th Wettest	Wettest since: 1940	1918
Aug–Sep 1948 2-Month	0.48" (12.19mm)	0.69" (17.53mm)	-0.21" (-5.34mm)	57th Driest	Driest since: 1947	1937, 2018
Aug–Sep 1948 2-Month	0.48" (12.19mm)	0.69" (17.53mm)	-0.21" (-5.34mm)	72nd Wettest	Wettest since: 1945	1983
Jul–Sep 1948 3-Month	0.65" (16.51mm)	0.87" (22.10mm)	-0.22" (-5.59mm)	50th Driest	Driest since: 1947	1928
	0.65" (16.51mm)	0.87" (22.10mm)	-0.22" (-5.59mm)	79th Wettest	Wettest since: 1946	1976
	Ties: 1951
Jun–Sep 1948 4-Month	1.31" (33.27mm)	1.22" (30.99mm)	0.09" (2.28mm)	81st Driest	Driest since: 1947	2002
Jun–Sep 1948 4-Month	1.31" (33.27mm)	1.22" (30.99mm)	0.09" (2.28mm)	48th Wettest	Wettest since: 1939	1982
May–Sep 1948 5-Month	2.62" (66.55mm)	2.10" (53.34mm)	0.52" (13.21mm)	99th Driest	Driest since: 1947	1924
May–Sep 1948 5-Month	2.62" (66.55mm)	2.10" (53.34mm)	0.52" (13.21mm)	30th Wettest	Wettest since: 1945	1998
Apr–Sep 1948 6-Month	7.00" (177.80mm)	3.74" (95.00mm)	3.26" (82.80mm)	125th Driest	Driest since: 1947	1924
Apr–Sep 1948 6-Month	7.00" (177.80mm)	3.74" (95.00mm)	3.26" (82.80mm)	4th Wettest	Wettest since: 1896	1896
Mar–Sep 1948 7-Month	10.48" (266.19mm)	6.95" (176.53mm)	3.53" (89.66mm)	111th Driest	Driest since: 1947	2008
Mar–Sep 1948 7-Month	10.48" (266.19mm)	6.95" (176.53mm)	3.53" (89.66mm)	18th Wettest	Wettest since: 1941	1995
Feb–Sep 1948 8-Month	12.47" (316.74mm)	10.80" (274.32mm)	1.67" (42.42mm)	93rd Driest	Driest since: 1947	2021
Feb–Sep 1948 8-Month	12.47" (316.74mm)	10.80" (274.32mm)	1.67" (42.42mm)	36th Wettest	Wettest since: 1941	1998
Jan–Sep 1948 9-Month	14.51" (368.55mm)	15.05" (382.27mm)	-0.54" (-13.72mm)	70th Driest	Driest since: 1947	2022
Jan–Sep 1948 9-Month	14.51" (368.55mm)	15.05" (382.27mm)	-0.54" (-13.72mm)	59th Wettest	Wettest since: 1943	1998
Dec 1947–Sep 1948 10-Month	15.95" (405.13mm)	18.67" (474.22mm)	-2.72" (-69.09mm)	53rd Driest	Driest since: 1947	1924
Dec 1947–Sep 1948 10-Month	15.95" (405.13mm)	18.67" (474.22mm)	-2.72" (-69.09mm)	75th Wettest	Wettest since: 1945	1983
Nov 1947–Sep 1948 11-Month	16.75" (425.45mm)	21.25" (539.75mm)	-4.50" (-114.30mm)	40th Driest	Driest since: 1947	1924
Nov 1947–Sep 1948 11-Month	16.75" (425.45mm)	21.25" (539.75mm)	-4.50" (-114.30mm)	88th Wettest	Wettest since: 1946	1983
Oct 1947–Sep 1948 12-Month	19.50" (495.30mm)	22.45" (570.23mm)	-2.95" (-74.93mm)	56th Driest	Driest since: 1947	1924
Oct 1947–Sep 1948 12-Month	19.50" (495.30mm)	22.45" (570.23mm)	-2.95" (-74.93mm)	72nd Wettest	Wettest since: 1946	1983
Apr 1947–Sep 1948 18-Month	21.93" (557.02mm)	26.19" (665.23mm)	-4.26" (-108.21mm)	43rd Driest	Driest since: 1947	2021
Apr 1947–Sep 1948 18-Month	21.93" (557.02mm)	26.19" (665.23mm)	-4.26" (-108.21mm)	85th Wettest	Wettest since: 1946	1983
Oct 1946–Sep 1948 24-Month	36.02" (914.91mm)	44.90" (1,140.46mm)	-8.88" (-225.55mm)	26th Driest	Driest since: 1934	1977
Oct 1946–Sep 1948 24-Month	36.02" (914.91mm)	44.90" (1,140.46mm)	-8.88" (-225.55mm)	101st Wettest	Wettest since: 1947	1983
Oct 1945–Sep 1948 36-Month	57.12" (1,450.85mm)	67.32" (1,709.93mm)	-10.20" (-259.08mm)	29th Driest	Driest since: 1935	2022
Oct 1945–Sep 1948 36-Month	57.12" (1,450.85mm)	67.32" (1,709.93mm)	-10.20" (-259.08mm)	97th Wettest	Wettest since: 1947	1984
Oct 1944–Sep 1948 48-Month	79.40" (2,016.76mm)	89.51" (2,273.55mm)	-10.11" (-256.79mm)	32nd Driest	Driest since: 1947	2015
	79.40" (2,016.76mm)	89.51" (2,273.55mm)	-10.11" (-256.79mm)	93rd Wettest	Wettest since: 1946	1998
	Ties: 1979
Oct 1943–Sep 1948 60-Month	98.08" (2,491.23mm)	111.69" (2,836.93mm)	-13.61" (-345.70mm)	23rd Driest	Driest since: 1935	1991
Oct 1943–Sep 1948 60-Month	98.08" (2,491.23mm)	111.69" (2,836.93mm)	-13.61" (-345.70mm)	101st Wettest	Wettest since: 1947	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 27, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings