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, August 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
August 2009 1-Month	1.18" (29.97mm)	1.07" (27.18mm)	0.11" (2.79mm)	90th Driest	Driest since: 2008	1944
	1.18" (29.97mm)	1.07" (27.18mm)	0.11" (2.79mm)	39th Wettest	Wettest since: 2007	1930
	Ties: 1915, 1931, 1965
Jul–Aug 2009 2-Month	2.63" (66.80mm)	2.35" (59.69mm)	0.28" (7.11mm)	88th Driest	Driest since: 2008	2020
Jul–Aug 2009 2-Month	2.63" (66.80mm)	2.35" (59.69mm)	0.28" (7.11mm)	41st Wettest	Wettest since: 2007	1930
Jun–Aug 2009 3-Month	5.85" (148.59mm)	4.19" (106.43mm)	1.66" (42.16mm)	119th Driest	Driest since: 2008	1924
	5.85" (148.59mm)	4.19" (106.43mm)	1.66" (42.16mm)	10th Wettest	Wettest since: 1998	1945
	Ties: 1923
May–Aug 2009 4-Month	7.11" (180.59mm)	6.40" (162.56mm)	0.71" (18.03mm)	88th Driest	Driest since: 2008	1919
May–Aug 2009 4-Month	7.11" (180.59mm)	6.40" (162.56mm)	0.71" (18.03mm)	41st Wettest	Wettest since: 2005	1908
Apr–Aug 2009 5-Month	9.61" (244.09mm)	8.18" (207.77mm)	1.43" (36.32mm)	105th Driest	Driest since: 2008	1924
Apr–Aug 2009 5-Month	9.61" (244.09mm)	8.18" (207.77mm)	1.43" (36.32mm)	24th Wettest	Wettest since: 1997	1941
Mar–Aug 2009 6-Month	11.21" (284.73mm)	9.43" (239.52mm)	1.78" (45.21mm)	111th Driest	Driest since: 2008	1919
Mar–Aug 2009 6-Month	11.21" (284.73mm)	9.43" (239.52mm)	1.78" (45.21mm)	18th Wettest	Wettest since: 1995	1941
Feb–Aug 2009 7-Month	11.85" (300.99mm)	10.39" (263.91mm)	1.46" (37.08mm)	102nd Driest	Driest since: 2008	1919
Feb–Aug 2009 7-Month	11.85" (300.99mm)	10.39" (263.91mm)	1.46" (37.08mm)	27th Wettest	Wettest since: 1998	1941
Jan–Aug 2009 8-Month	13.19" (335.03mm)	11.46" (291.08mm)	1.73" (43.95mm)	106th Driest	Driest since: 2008	1919
Jan–Aug 2009 8-Month	13.19" (335.03mm)	11.46" (291.08mm)	1.73" (43.95mm)	23rd Wettest	Wettest since: 1998	1899
Dec 2008–Aug 2009 9-Month	14.39" (365.51mm)	12.47" (316.74mm)	1.92" (48.77mm)	110th Driest	Driest since: 2008	1919
	14.39" (365.51mm)	12.47" (316.74mm)	1.92" (48.77mm)	18th Wettest	Wettest since: 1997	1993
	Ties: 1904, 1905
Nov 2008–Aug 2009 10-Month	15.31" (388.87mm)	13.50" (342.90mm)	1.81" (45.97mm)	104th Driest	Driest since: 2008	1919
Nov 2008–Aug 2009 10-Month	15.31" (388.87mm)	13.50" (342.90mm)	1.81" (45.97mm)	24th Wettest	Wettest since: 1997	1945
Oct 2008–Aug 2009 11-Month	16.54" (420.12mm)	14.70" (373.38mm)	1.84" (46.74mm)	102nd Driest	Driest since: 2008	1919
Oct 2008–Aug 2009 11-Month	16.54" (420.12mm)	14.70" (373.38mm)	1.84" (46.74mm)	26th Wettest	Wettest since: 1999	1995
Sep 2008–Aug 2009 12-Month	17.95" (455.93mm)	15.93" (404.62mm)	2.02" (51.31mm)	107th Driest	Driest since: 2008	1934
Sep 2008–Aug 2009 12-Month	17.95" (455.93mm)	15.93" (404.62mm)	2.02" (51.31mm)	21st Wettest	Wettest since: 1999	1995
Mar 2008–Aug 2009 18-Month	27.21" (691.13mm)	25.36" (644.14mm)	1.85" (46.99mm)	89th Driest	Driest since: 2008	2013
Mar 2008–Aug 2009 18-Month	27.21" (691.13mm)	25.36" (644.14mm)	1.85" (46.99mm)	39th Wettest	Wettest since: 1999	1945
Sep 2007–Aug 2009 24-Month	34.17" (867.92mm)	31.86" (809.24mm)	2.31" (58.68mm)	96th Driest	Driest since: 2008	2002
Sep 2007–Aug 2009 24-Month	34.17" (867.92mm)	31.86" (809.24mm)	2.31" (58.68mm)	31st Wettest	Wettest since: 1999	2015
Sep 2006–Aug 2009 36-Month	49.07" (1,246.38mm)	47.78" (1,213.61mm)	1.29" (32.77mm)	84th Driest	Driest since: 2008	2002
Sep 2006–Aug 2009 36-Month	49.07" (1,246.38mm)	47.78" (1,213.61mm)	1.29" (32.77mm)	42nd Wettest	Wettest since: 2000	1997
Sep 2005–Aug 2009 48-Month	61.76" (1,568.70mm)	63.68" (1,617.47mm)	-1.92" (-48.77mm)	46th Driest	Driest since: 2008	2003
Sep 2005–Aug 2009 48-Month	61.76" (1,568.70mm)	63.68" (1,617.47mm)	-1.92" (-48.77mm)	79th Wettest	Wettest since: 2001	1998
Sep 2004–Aug 2009 60-Month	78.33" (1,989.58mm)	79.53" (2,020.06mm)	-1.20" (-30.48mm)	57th Driest	Driest since: 2008	2004
Sep 2004–Aug 2009 60-Month	78.33" (1,989.58mm)	79.53" (2,020.06mm)	-1.20" (-30.48mm)	67th Wettest	Wettest since: 2001	1999

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published February 2023, retrieved on February 9, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings