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 1977

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
September 1977 1-Month	0.87" (22.10mm)	0.45" (11.43mm)	0.42" (10.67mm)	109th Driest	Driest since: 1975	1974
September 1977 1-Month	0.87" (22.10mm)	0.45" (11.43mm)	0.42" (10.67mm)	20th Wettest	Wettest since: 1976	1918
Aug–Sep 1977 2-Month	1.62" (41.15mm)	0.69" (17.53mm)	0.93" (23.62mm)	124th Driest	Driest since: 1975	1937, 2018
	1.62" (41.15mm)	0.69" (17.53mm)	0.93" (23.62mm)	5th Wettest	Wettest since: 1976	1983
	Ties: 1982, 1989
Jul–Sep 1977 3-Month	1.70" (43.18mm)	0.87" (22.10mm)	0.83" (21.08mm)	122nd Driest	Driest since: 1975	1928
Jul–Sep 1977 3-Month	1.70" (43.18mm)	0.87" (22.10mm)	0.83" (21.08mm)	7th Wettest	Wettest since: 1976	1976
Jun–Sep 1977 4-Month	2.05" (52.07mm)	1.22" (30.99mm)	0.83" (21.08mm)	119th Driest	Driest since: 1975	2002
Jun–Sep 1977 4-Month	2.05" (52.07mm)	1.22" (30.99mm)	0.83" (21.08mm)	10th Wettest	Wettest since: 1976	1982
May–Sep 1977 5-Month	3.93" (99.82mm)	2.10" (53.34mm)	1.83" (46.48mm)	125th Driest	Driest since: 1976	1924
May–Sep 1977 5-Month	3.93" (99.82mm)	2.10" (53.34mm)	1.83" (46.48mm)	4th Wettest	Wettest since: 1906	1998
Apr–Sep 1977 6-Month	4.16" (105.66mm)	3.74" (95.00mm)	0.42" (10.66mm)	93rd Driest	Driest since: 1976	1924
Apr–Sep 1977 6-Month	4.16" (105.66mm)	3.74" (95.00mm)	0.42" (10.66mm)	36th Wettest	Wettest since: 1967	1896
Mar–Sep 1977 7-Month	5.80" (147.32mm)	6.95" (176.53mm)	-1.15" (-29.21mm)	54th Driest	Driest since: 1976	2008
Mar–Sep 1977 7-Month	5.80" (147.32mm)	6.95" (176.53mm)	-1.15" (-29.21mm)	75th Wettest	Wettest since: 1975	1995
Feb–Sep 1977 8-Month	6.96" (176.78mm)	10.80" (274.32mm)	-3.84" (-97.54mm)	21st Driest	Driest since: 1972	2021
Feb–Sep 1977 8-Month	6.96" (176.78mm)	10.80" (274.32mm)	-3.84" (-97.54mm)	108th Wettest	Wettest since: 1976	1998
Jan–Sep 1977 9-Month	8.94" (227.08mm)	15.05" (382.27mm)	-6.11" (-155.19mm)	17th Driest	Driest since: 1972	2022
Jan–Sep 1977 9-Month	8.94" (227.08mm)	15.05" (382.27mm)	-6.11" (-155.19mm)	112th Wettest	Wettest since: 1976	1998
Dec 1976–Sep 1977 10-Month	9.49" (241.05mm)	18.67" (474.22mm)	-9.18" (-233.17mm)	3rd Driest	Driest since: 1964	1924
Dec 1976–Sep 1977 10-Month	9.49" (241.05mm)	18.67" (474.22mm)	-9.18" (-233.17mm)	125th Wettest	Wettest since: 1976	1983
Nov 1976–Sep 1977 11-Month	10.35" (262.89mm)	21.25" (539.75mm)	-10.90" (-276.86mm)	2nd Driest	Driest since: 1924	1924
Nov 1976–Sep 1977 11-Month	10.35" (262.89mm)	21.25" (539.75mm)	-10.90" (-276.86mm)	126th Wettest	Wettest since: 1976	1983
Oct 1976–Sep 1977 12-Month	10.86" (275.84mm)	22.45" (570.23mm)	-11.59" (-294.39mm)	2nd Driest	Driest since: 1924	1924
Oct 1976–Sep 1977 12-Month	10.86" (275.84mm)	22.45" (570.23mm)	-11.59" (-294.39mm)	126th Wettest	Wettest since: 1976	1983
Apr 1976–Sep 1977 18-Month	14.95" (379.73mm)	26.19" (665.23mm)	-11.24" (-285.50mm)	2nd Driest	Driest since: 1977	2021
Apr 1976–Sep 1977 18-Month	14.95" (379.73mm)	26.19" (665.23mm)	-11.24" (-285.50mm)	126th Wettest	Wettest since: 1976	1983
Oct 1975–Sep 1977 24-Month	25.52" (648.21mm)	44.90" (1,140.46mm)	-19.38" (-492.25mm)	1st Driest	Driest since: 1977	1977
Oct 1975–Sep 1977 24-Month	25.52" (648.21mm)	44.90" (1,140.46mm)	-19.38" (-492.25mm)	126th Wettest	Wettest since: 1976	1983
Oct 1974–Sep 1977 36-Month	47.58" (1,208.53mm)	67.32" (1,709.93mm)	-19.74" (-501.40mm)	4th Driest	Driest since: 1977	2022
Oct 1974–Sep 1977 36-Month	47.58" (1,208.53mm)	67.32" (1,709.93mm)	-19.74" (-501.40mm)	122nd Wettest	Wettest since: 1976	1984
Oct 1973–Sep 1977 48-Month	75.53" (1,918.46mm)	89.51" (2,273.55mm)	-13.98" (-355.09mm)	19th Driest	Driest since: 1962	2015
Oct 1973–Sep 1977 48-Month	75.53" (1,918.46mm)	89.51" (2,273.55mm)	-13.98" (-355.09mm)	106th Wettest	Wettest since: 1976	1998
Oct 1972–Sep 1977 60-Month	100.90" (2,562.86mm)	111.69" (2,836.93mm)	-10.79" (-274.07mm)	32nd Driest	Driest since: 1964	1991
Oct 1972–Sep 1977 60-Month	100.90" (2,562.86mm)	111.69" (2,836.93mm)	-10.79" (-274.07mm)	92nd Wettest	Wettest since: 1976	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