Statewide Rankings

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Month:

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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.

Wyoming

Precipitation Rankings, October 2009

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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
October 2009 1-Month	2.02" (51.31mm)	1.20" (30.48mm)	0.82" (20.83mm)	118th Driest	Driest since: 2008	1933
October 2009 1-Month	2.02" (51.31mm)	1.20" (30.48mm)	0.82" (20.83mm)	11th Wettest	Wettest since: 1998	1994
Sep–Oct 2009 2-Month	2.65" (67.31mm)	2.44" (61.98mm)	0.21" (5.33mm)	86th Driest	Driest since: 2008	1952
Sep–Oct 2009 2-Month	2.65" (67.31mm)	2.44" (61.98mm)	0.21" (5.33mm)	43rd Wettest	Wettest since: 2007	2013
Aug–Oct 2009 3-Month	3.83" (97.28mm)	3.51" (89.15mm)	0.32" (8.13mm)	85th Driest	Driest since: 2008	1958
	3.83" (97.28mm)	3.51" (89.15mm)	0.32" (8.13mm)	44th Wettest	Wettest since: 2007	1923
	Ties: 1947
Jul–Oct 2009 4-Month	5.28" (134.11mm)	4.79" (121.67mm)	0.49" (12.44mm)	91st Driest	Driest since: 2008	1964
Jul–Oct 2009 4-Month	5.28" (134.11mm)	4.79" (121.67mm)	0.49" (12.44mm)	38th Wettest	Wettest since: 2007	1923
Jun–Oct 2009 5-Month	8.50" (215.90mm)	6.62" (168.15mm)	1.88" (47.75mm)	114th Driest	Driest since: 2008	1988
Jun–Oct 2009 5-Month	8.50" (215.90mm)	6.62" (168.15mm)	1.88" (47.75mm)	15th Wettest	Wettest since: 1998	1923
May–Oct 2009 6-Month	9.76" (247.90mm)	8.84" (224.54mm)	0.92" (23.36mm)	92nd Driest	Driest since: 2008	2012
May–Oct 2009 6-Month	9.76" (247.90mm)	8.84" (224.54mm)	0.92" (23.36mm)	37th Wettest	Wettest since: 1998	1923
Apr–Oct 2009 7-Month	12.26" (311.40mm)	10.61" (269.49mm)	1.65" (41.91mm)	102nd Driest	Driest since: 2008	2012
	12.26" (311.40mm)	10.61" (269.49mm)	1.65" (41.91mm)	27th Wettest	Wettest since: 1998	1941
	Ties: 1906
Mar–Oct 2009 8-Month	13.86" (352.04mm)	11.86" (301.24mm)	2.00" (50.80mm)	106th Driest	Driest since: 2008	2012
Mar–Oct 2009 8-Month	13.86" (352.04mm)	11.86" (301.24mm)	2.00" (50.80mm)	23rd Wettest	Wettest since: 1998	1941
Feb–Oct 2009 9-Month	14.50" (368.30mm)	12.83" (325.88mm)	1.67" (42.42mm)	104th Driest	Driest since: 2008	2012
	14.50" (368.30mm)	12.83" (325.88mm)	1.67" (42.42mm)	25th Wettest	Wettest since: 1998	1941
	Ties: 2017
Jan–Oct 2009 10-Month	15.84" (402.34mm)	13.89" (352.81mm)	1.95" (49.53mm)	104th Driest	Driest since: 2008	2012
Jan–Oct 2009 10-Month	15.84" (402.34mm)	13.89" (352.81mm)	1.95" (49.53mm)	25th Wettest	Wettest since: 1998	1923
Dec 2008–Oct 2009 11-Month	17.04" (432.82mm)	14.90" (378.46mm)	2.14" (54.36mm)	103rd Driest	Driest since: 2008	2012
Dec 2008–Oct 2009 11-Month	17.04" (432.82mm)	14.90" (378.46mm)	2.14" (54.36mm)	25th Wettest	Wettest since: 1998	1923
Nov 2008–Oct 2009 12-Month	17.96" (456.18mm)	15.94" (404.88mm)	2.02" (51.30mm)	105th Driest	Driest since: 2008	1960
	17.96" (456.18mm)	15.94" (404.88mm)	2.02" (51.30mm)	23rd Wettest	Wettest since: 1998	1923
	Ties: 1906
May 2008–Oct 2009 18-Month	27.62" (701.55mm)	24.75" (628.65mm)	2.87" (72.90mm)	108th Driest	Driest since: 2008	1934
May 2008–Oct 2009 18-Month	27.62" (701.55mm)	24.75" (628.65mm)	2.87" (72.90mm)	20th Wettest	Wettest since: 1999	1927
Nov 2007–Oct 2009 24-Month	33.72" (856.49mm)	31.86" (809.24mm)	1.86" (47.25mm)	87th Driest	Driest since: 2008	2002
	33.72" (856.49mm)	31.86" (809.24mm)	1.86" (47.25mm)	40th Wettest	Wettest since: 1999	1998
	Ties: 2014
Nov 2006–Oct 2009 36-Month	48.75" (1,238.25mm)	47.81" (1,214.37mm)	0.94" (23.88mm)	77th Driest	Driest since: 2008	2002
Nov 2006–Oct 2009 36-Month	48.75" (1,238.25mm)	47.81" (1,214.37mm)	0.94" (23.88mm)	49th Wettest	Wettest since: 2000	1947
Nov 2005–Oct 2009 48-Month	61.99" (1,574.55mm)	63.72" (1,618.49mm)	-1.73" (-43.94mm)	50th Driest	Driest since: 2008	2003
Nov 2005–Oct 2009 48-Month	61.99" (1,574.55mm)	63.72" (1,618.49mm)	-1.73" (-43.94mm)	75th Wettest	Wettest since: 2000	1998
Nov 2004–Oct 2009 60-Month	77.35" (1,964.69mm)	79.57" (2,021.08mm)	-2.22" (-56.39mm)	45th Driest	Driest since: 2008	1935
Nov 2004–Oct 2009 60-Month	77.35" (1,964.69mm)	79.57" (2,021.08mm)	-2.22" (-56.39mm)	79th Wettest	Wettest since: 2001	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published January 2023, retrieved on January 29, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings