Statewide Rankings

Statewide Data Info
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.

Alabama

Precipitation Rankings, September 2021

View Period (Months):
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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 2021
1-Month 		4.83"
(122.68mm)		 3.78"
(96.01mm)		 1.05"
(26.67mm)		 99th Driest
Driest since:
 2019
30th Wettest
Wettest since:
 1988
Aug–Sep 2021
2-Month 		12.26"
(311.40mm)		 8.12"
(206.25mm)		 4.14"
(105.15mm)		 121st Driest
Driest since:
 1954
8th Wettest
Wettest since:
 1939
Jul–Sep 2021
3-Month 		19.75"
(501.65mm)		 13.57"
(344.68mm)		 6.18"
(156.97mm)		 125th Driest
Driest since:
 1954
4th Wettest
Wettest since:
 1916
Jun–Sep 2021
4-Month 		28.48"
(723.39mm)		 17.84"
(453.14mm)		 10.64"
(270.25mm)		 128th Driest
Driest since:
 1954
1st Wettest
Wettest to Date
 2021
May–Sep 2021
5-Month 		33.17"
(842.52mm)		 22.09"
(561.09mm)		 11.08"
(281.43mm)		 127th Driest
Driest since:
 1954
2nd Wettest
Wettest since:
 2003
Apr–Sep 2021
6-Month 		38.72"
(983.49mm)		 26.89"
(683.01mm)		 11.83"
(300.48mm)		 127th Driest
Driest since:
 1954
2nd Wettest
Wettest since:
 2003
Mar–Sep 2021
7-Month 		46.77"
(1,187.96mm)		 33.05"
(839.47mm)		 13.72"
(348.49mm)		 128th Driest
Driest since:
 1954
1st Wettest
Wettest to Date
 2021
Feb–Sep 2021
8-Month 		50.99"
(1,295.15mm)		 38.23"
(971.04mm)		 12.76"
(324.11mm)		 126th Driest
Driest since:
 1954
3rd Wettest
Wettest since:
 1975
Jan–Sep 2021
9-Month 		54.71"
(1,389.63mm)		 43.41"
(1,102.61mm)		 11.30"
(287.02mm)		 121st Driest
Driest since:
 1954
8th Wettest
Wettest since:
 1975
Dec 2020–Sep 2021
10-Month 		58.55"
(1,487.17mm)		 48.58"
(1,233.93mm)		 9.97"
(253.24mm)		 117th Driest
Driest since:
 2007
11th Wettest
Wettest since:
 1975
Nov 2020–Sep 2021
11-Month 		61.30"
(1,557.02mm)		 52.38"
(1,330.45mm)		 8.92"
(226.57mm)		 113th Driest
Driest since:
 2000
15th Wettest
Wettest since:
 1975
Oct 2020–Sep 2021
12-Month 		66.41"
(1,686.81mm)		 55.27"
(1,403.86mm)		 11.14"
(282.95mm)		 115th Driest
Driest since:
 2000
13th Wettest
Wettest since:
 2020
Apr 2020–Sep 2021
18-Month 		99.39"
(2,524.51mm)		 82.32"
(2,090.93mm)		 17.07"
(433.58mm)		 125th Driest
Driest since:
 2007
3rd Wettest
Wettest since:
 1975
Oct 2019–Sep 2021
24-Month 		140.34"
(3,564.64mm)		 110.77"
(2,813.56mm)		 29.57"
(751.08mm)		 126th Driest
Driest since:
 2007
1st Wettest
Wettest to Date
 2021
Oct 2018–Sep 2021
36-Month 		198.61"
(5,044.69mm)		 166.30"
(4,224.02mm)		 32.31"
(820.67mm)		 124th Driest
Driest since:
 2008
2nd Wettest
Wettest since:
 1975
Oct 2017–Sep 2021
48-Month 		255.05"
(6,478.27mm)		 221.61"
(5,628.89mm)		 33.44"
(849.38mm)		 122nd Driest
Driest since:
 1899
3rd Wettest
Wettest since:
 1976
Oct 2016–Sep 2021
60-Month 		315.75"
(8,020.05mm)		 276.82"
(7,031.23mm)		 38.93"
(988.82mm)		 121st Driest
Driest since:
 1955
3rd Wettest
Wettest since:
 1977

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