Statewide Rankings

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Month:

State:

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.

Massachusetts

Precipitation Rankings, September 1999

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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
September 1999 1-Month	9.03" (229.36mm)	3.79" (96.27mm)	5.24" (133.09mm)	126th Driest	Driest since: 1998	1914
September 1999 1-Month	9.03" (229.36mm)	3.79" (96.27mm)	5.24" (133.09mm)	3rd Wettest	Wettest since: 1938	1938
Aug–Sep 1999 2-Month	11.93" (303.02mm)	7.69" (195.33mm)	4.24" (107.69mm)	117th Driest	Driest since: 1998	1984
Aug–Sep 1999 2-Month	11.93" (303.02mm)	7.69" (195.33mm)	4.24" (107.69mm)	12th Wettest	Wettest since: 1991	2011
Jul–Sep 1999 3-Month	14.85" (377.19mm)	11.37" (288.80mm)	3.48" (88.39mm)	111th Driest	Driest since: 1998	1968
Jul–Sep 1999 3-Month	14.85" (377.19mm)	11.37" (288.80mm)	3.48" (88.39mm)	18th Wettest	Wettest since: 1996	2021
Jun–Sep 1999 4-Month	16.29" (413.77mm)	15.02" (381.51mm)	1.27" (32.26mm)	81st Driest	Driest since: 1997	1957
	16.29" (413.77mm)	15.02" (381.51mm)	1.27" (32.26mm)	48th Wettest	Wettest since: 1998	1938
	Ties: 1973, 1994
May–Sep 1999 5-Month	20.20" (513.08mm)	18.61" (472.69mm)	1.59" (40.39mm)	82nd Driest	Driest since: 1997	1964
May–Sep 1999 5-Month	20.20" (513.08mm)	18.61" (472.69mm)	1.59" (40.39mm)	47th Wettest	Wettest since: 1998	1938
Apr–Sep 1999 6-Month	21.32" (541.53mm)	22.51" (571.75mm)	-1.19" (-30.22mm)	54th Driest	Driest since: 1997	1964
Apr–Sep 1999 6-Month	21.32" (541.53mm)	22.51" (571.75mm)	-1.19" (-30.22mm)	75th Wettest	Wettest since: 1998	1938
Mar–Sep 1999 7-Month	26.21" (665.73mm)	26.45" (671.83mm)	-0.24" (-6.10mm)	58th Driest	Driest since: 1997	1965
	26.21" (665.73mm)	26.45" (671.83mm)	-0.24" (-6.10mm)	71st Wettest	Wettest since: 1998	1938
	Ties: 1959
Feb–Sep 1999 8-Month	29.80" (756.92mm)	29.66" (753.36mm)	0.14" (3.56mm)	61st Driest	Driest since: 1997	1957
Feb–Sep 1999 8-Month	29.80" (756.92mm)	29.66" (753.36mm)	0.14" (3.56mm)	68th Wettest	Wettest since: 1998	2008
Jan–Sep 1999 9-Month	36.20" (919.48mm)	33.30" (845.82mm)	2.90" (73.66mm)	89th Driest	Driest since: 1997	1957
Jan–Sep 1999 9-Month	36.20" (919.48mm)	33.30" (845.82mm)	2.90" (73.66mm)	40th Wettest	Wettest since: 1998	2008
Dec 1998–Sep 1999 10-Month	37.78" (959.61mm)	37.13" (943.10mm)	0.65" (16.51mm)	66th Driest	Driest since: 1997	1957
Dec 1998–Sep 1999 10-Month	37.78" (959.61mm)	37.13" (943.10mm)	0.65" (16.51mm)	62nd Wettest	Wettest since: 1998	2008
Nov 1998–Sep 1999 11-Month	40.11" (1,018.79mm)	41.15" (1,045.21mm)	-1.04" (-26.42mm)	54th Driest	Driest since: 1997	1965
Nov 1998–Sep 1999 11-Month	40.11" (1,018.79mm)	41.15" (1,045.21mm)	-1.04" (-26.42mm)	74th Wettest	Wettest since: 1998	2008
Oct 1998–Sep 1999 12-Month	45.10" (1,145.54mm)	44.66" (1,134.36mm)	0.44" (11.18mm)	62nd Driest	Driest since: 1995	1965
	45.10" (1,145.54mm)	44.66" (1,134.36mm)	0.44" (11.18mm)	66th Wettest	Wettest since: 1998	2006
	Ties: 1931
Apr 1998–Sep 1999 18-Month	70.98" (1,802.89mm)	67.07" (1,703.58mm)	3.91" (99.31mm)	78th Driest	Driest since: 1995	1965
Apr 1998–Sep 1999 18-Month	70.98" (1,802.89mm)	67.07" (1,703.58mm)	3.91" (99.31mm)	50th Wettest	Wettest since: 1998	2006
Oct 1997–Sep 1999 24-Month	98.08" (2,491.23mm)	89.25" (2,266.95mm)	8.83" (224.28mm)	95th Driest	Driest since: 1996	1966
Oct 1997–Sep 1999 24-Month	98.08" (2,491.23mm)	89.25" (2,266.95mm)	8.83" (224.28mm)	32nd Wettest	Wettest since: 1998	2007
Oct 1996–Sep 1999 36-Month	145.23" (3,688.84mm)	133.88" (3,400.55mm)	11.35" (288.29mm)	94th Driest	Driest since: 1997	1966
Oct 1996–Sep 1999 36-Month	145.23" (3,688.84mm)	133.88" (3,400.55mm)	11.35" (288.29mm)	32nd Wettest	Wettest since: 1998	2008
Oct 1995–Sep 1999 48-Month	204.78" (5,201.41mm)	178.50" (4,533.90mm)	26.28" (667.51mm)	115th Driest	Driest since: 1998	1966
Oct 1995–Sep 1999 48-Month	204.78" (5,201.41mm)	178.50" (4,533.90mm)	26.28" (667.51mm)	10th Wettest	Wettest since: 1975	2009
Oct 1994–Sep 1999 60-Month	239.75" (6,089.65mm)	223.10" (5,666.74mm)	16.65" (422.91mm)	95th Driest	Driest since: 1997	1966
Oct 1994–Sep 1999 60-Month	239.75" (6,089.65mm)	223.10" (5,666.74mm)	16.65" (422.91mm)	29th Wettest	Wettest since: 1998	2010

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Statewide Rankings, published March 2023, retrieved on April 1, 2023 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/statewide/rankings