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, August 1940

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Record Wettest
Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2022)	Wettest/Driest Since	Record
August 1940 1-Month	0.02" (0.51mm)	0.24" (6.10mm)	-0.22" (-5.59mm)	3rd Driest	Driest since: 1937	1937, 2002
	0.02" (0.51mm)	0.24" (6.10mm)	-0.22" (-5.59mm)	126th Wettest	Wettest since: 1939	1983
	Ties: 1911, 1928, 1960
Jul–Aug 1940 2-Month	0.03" (0.76mm)	0.42" (10.67mm)	-0.39" (-9.91mm)	1st Driest	Driest since: 1940	1940
Jul–Aug 1940 2-Month	0.03" (0.76mm)	0.42" (10.67mm)	-0.39" (-9.91mm)	128th Wettest	Wettest since: 1939	1983
Jun–Aug 1940 3-Month	0.16" (4.06mm)	0.77" (19.56mm)	-0.61" (-15.50mm)	2nd Driest	Driest since: 1928	2002
	0.16" (4.06mm)	0.77" (19.56mm)	-0.61" (-15.50mm)	127th Wettest	Wettest since: 1939	1913
	Ties: 1928
May–Aug 1940 4-Month	0.84" (21.34mm)	1.65" (41.91mm)	-0.81" (-20.57mm)	17th Driest	Driest since: 1935	1924
May–Aug 1940 4-Month	0.84" (21.34mm)	1.65" (41.91mm)	-0.81" (-20.57mm)	112th Wettest	Wettest since: 1939	1998
Apr–Aug 1940 5-Month	2.08" (52.83mm)	3.28" (83.31mm)	-1.20" (-30.48mm)	24th Driest	Driest since: 1939	2021
Apr–Aug 1940 5-Month	2.08" (52.83mm)	3.28" (83.31mm)	-1.20" (-30.48mm)	105th Wettest	Wettest since: 1938	1896
Mar–Aug 1940 6-Month	5.82" (147.83mm)	6.50" (165.10mm)	-0.68" (-17.27mm)	64th Driest	Driest since: 1939	2008
Mar–Aug 1940 6-Month	5.82" (147.83mm)	6.50" (165.10mm)	-0.68" (-17.27mm)	65th Wettest	Wettest since: 1938	1995
Feb–Aug 1940 7-Month	13.59" (345.19mm)	10.35" (262.89mm)	3.24" (82.30mm)	108th Driest	Driest since: 1939	1997, 2021
Feb–Aug 1940 7-Month	13.59" (345.19mm)	10.35" (262.89mm)	3.24" (82.30mm)	21st Wettest	Wettest since: 1938	1998
Jan–Aug 1940 8-Month	20.64" (524.26mm)	14.60" (370.84mm)	6.04" (153.42mm)	112th Driest	Driest since: 1939	2022
Jan–Aug 1940 8-Month	20.64" (524.26mm)	14.60" (370.84mm)	6.04" (153.42mm)	17th Wettest	Wettest since: 1938	1995
Dec 1939–Aug 1940 9-Month	23.65" (600.71mm)	18.22" (462.79mm)	5.43" (137.92mm)	106th Driest	Driest since: 1939	1924
Dec 1939–Aug 1940 9-Month	23.65" (600.71mm)	18.22" (462.79mm)	5.43" (137.92mm)	22nd Wettest	Wettest since: 1938	1998
Nov 1939–Aug 1940 10-Month	24.11" (612.39mm)	20.80" (528.32mm)	3.31" (84.07mm)	93rd Driest	Driest since: 1939	1924
Nov 1939–Aug 1940 10-Month	24.11" (612.39mm)	20.80" (528.32mm)	3.31" (84.07mm)	35th Wettest	Wettest since: 1938	1983
Oct 1939–Aug 1940 11-Month	25.10" (637.54mm)	22.00" (558.80mm)	3.10" (78.74mm)	95th Driest	Driest since: 1939	1924
Oct 1939–Aug 1940 11-Month	25.10" (637.54mm)	22.00" (558.80mm)	3.10" (78.74mm)	33rd Wettest	Wettest since: 1938	1983
Sep 1939–Aug 1940 12-Month	26.21" (665.73mm)	22.44" (569.98mm)	3.77" (95.75mm)	97th Driest	Driest since: 1939	2021
Sep 1939–Aug 1940 12-Month	26.21" (665.73mm)	22.44" (569.98mm)	3.77" (95.75mm)	31st Wettest	Wettest since: 1938	1983
Mar 1939–Aug 1940 18-Month	30.93" (785.62mm)	28.96" (735.58mm)	1.97" (50.04mm)	87th Driest	Driest since: 1939	1977
Mar 1939–Aug 1940 18-Month	30.93" (785.62mm)	28.96" (735.58mm)	1.97" (50.04mm)	41st Wettest	Wettest since: 1938	1983
Sep 1938–Aug 1940 24-Month	41.91" (1,064.51mm)	44.90" (1,140.46mm)	-2.99" (-75.95mm)	52nd Driest	Driest since: 1935	1977
Sep 1938–Aug 1940 24-Month	41.91" (1,064.51mm)	44.90" (1,140.46mm)	-2.99" (-75.95mm)	75th Wettest	Wettest since: 1939	1983
Sep 1937–Aug 1940 36-Month	75.25" (1,911.35mm)	67.31" (1,709.67mm)	7.94" (201.68mm)	97th Driest	Driest since: 1939	2022
Sep 1937–Aug 1940 36-Month	75.25" (1,911.35mm)	67.31" (1,709.67mm)	7.94" (201.68mm)	29th Wettest	Wettest since: 1938	1984
Sep 1936–Aug 1940 48-Month	98.46" (2,500.88mm)	89.50" (2,273.30mm)	8.96" (227.58mm)	99th Driest	Driest since: 1939	2015
Sep 1936–Aug 1940 48-Month	98.46" (2,500.88mm)	89.50" (2,273.30mm)	8.96" (227.58mm)	26th Wettest	Wettest since: 1938	1998
Sep 1935–Aug 1940 60-Month	121.59" (3,088.39mm)	111.68" (2,836.67mm)	9.91" (251.72mm)	98th Driest	Driest since: 1939	1991
Sep 1935–Aug 1940 60-Month	121.59" (3,088.39mm)	111.68" (2,836.67mm)	9.91" (251.72mm)	26th Wettest	Wettest since: 1911	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on February 6, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings