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 1977

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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 1977
1-Month 		7.02"
(178.31mm)		 3.78"
(96.01mm)		 3.24"
(82.30mm)		 120th Driest
Driest since:
 2019
9th Wettest
Wettest since:
 1988
Aug–Sep 1977
2-Month 		11.29"
(286.77mm)		 8.12"
(206.25mm)		 3.17"
(80.52mm)		 113th Driest
Driest since:
 1954
16th Wettest
Wettest since:
 1939
Jul–Sep 1977
3-Month 		16.38"
(416.05mm)		 13.57"
(344.68mm)		 2.81"
(71.37mm)		 104th Driest
Driest since:
 1954
25th Wettest
Wettest since:
 1916
Jun–Sep 1977
4-Month 		19.01"
(482.85mm)		 17.84"
(453.14mm)		 1.17"
(29.71mm)		 78th Driest
Driest since:
 1954
51st Wettest
Wettest since:
 2021
May–Sep 1977
5-Month 		21.14"
(536.96mm)		 22.09"
(561.09mm)		 -0.95"
(-24.13mm)		 55th Driest
Driest since:
 1954
74th Wettest
Wettest since:
 2003
Apr–Sep 1977
6-Month 		25.46"
(646.68mm)		 26.89"
(683.01mm)		 -1.43"
(-36.33mm)		 45th Driest
Driest since:
 1954
84th Wettest
Wettest since:
 2003
Mar–Sep 1977
7-Month 		35.32"
(897.13mm)		 33.05"
(839.47mm)		 2.27"
(57.66mm)		 83rd Driest
Driest since:
 1954
46th Wettest
Wettest since:
 2021
Feb–Sep 1977
8-Month 		38.88"
(987.55mm)		 38.23"
(971.04mm)		 0.65"
(16.51mm)		 74th Driest
Driest since:
 1954
55th Wettest
Wettest since:
 1975
Jan–Sep 1977
9-Month 		43.83"
(1,113.28mm)		 43.41"
(1,102.61mm)		 0.42"
(10.67mm)		 73rd Driest
Driest since:
 1954
56th Wettest
Wettest since:
 1975
Dec 1976–Sep 1977
10-Month 		48.49"
(1,231.65mm)		 48.58"
(1,233.93mm)		 -0.09"
(-2.28mm)		 64th Driest
Driest since:
 2007
64th Wettest
Wettest since:
 1975
Nov 1976–Sep 1977
11-Month 		52.90"
(1,343.66mm)		 52.38"
(1,330.45mm)		 0.52"
(13.21mm)		 68th Driest
Driest since:
 2000
60th Wettest
Wettest since:
 1975
Oct 1976–Sep 1977
12-Month 		56.56"
(1,436.62mm)		 55.27"
(1,403.86mm)		 1.29"
(32.76mm)		 71st Driest
Driest since:
 2000
57th Wettest
Wettest since:
 2020
Apr 1976–Sep 1977
18-Month 		82.27"
(2,089.66mm)		 82.32"
(2,090.93mm)		 -0.05"
(-1.27mm)		 63rd Driest
Driest since:
 2007
65th Wettest
Wettest since:
 1975
Oct 1975–Sep 1977
24-Month 		114.36"
(2,904.74mm)		 110.77"
(2,813.56mm)		 3.59"
(91.18mm)		 76th Driest
Driest since:
 2007
51st Wettest
Wettest since:
 2021
Oct 1974–Sep 1977
36-Month 		185.68"
(4,716.27mm)		 166.30"
(4,224.02mm)		 19.38"
(492.25mm)		 114th Driest
Driest since:
 2008
12th Wettest
Wettest since:
 1975
Oct 1973–Sep 1977
48-Month 		248.51"
(6,312.15mm)		 221.61"
(5,628.89mm)		 26.90"
(683.26mm)		 118th Driest
Driest since:
 1899
7th Wettest
Wettest since:
 1976
Oct 1972–Sep 1977
60-Month 		317.98"
(8,076.69mm)		 276.82"
(7,031.23mm)		 41.16"
(1,045.46mm)		 123rd Driest
Driest since:
 1955
1st Wettest
Wettest to Date
 1977

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