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.

Louisiana

Precipitation Rankings, September 1999

View Period (Months):
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
September 1999
1-Month
3.50"
(88.90mm)
4.12"
(104.65mm)
-0.62"
(-15.75mm)
63rd Driest
Driest since:
1953
66th Wettest
Wettest since:
1913
Aug–Sep 1999
2-Month
5.12"
(130.05mm)
8.76"
(222.50mm)
-3.64"
(-92.45mm)
5th Driest
Driest since:
1924
124th Wettest
Wettest since:
1913
Jul–Sep 1999
3-Month
9.51"
(241.55mm)
14.39"
(365.51mm)
-4.88"
(-123.96mm)
10th Driest
Driest since:
1924
119th Wettest
Wettest since:
1913
Jun–Sep 1999
4-Month
16.34"
(415.04mm)
18.95"
(481.33mm)
-2.61"
(-66.29mm)
28th Driest
Driest since:
1924
101st Wettest
Wettest since:
1940
May–Sep 1999
5-Month
20.72"
(526.29mm)
24.11"
(612.39mm)
-3.39"
(-86.10mm)
29th Driest
Driest since:
1924
100th Wettest
Wettest since:
2021
Apr–Sep 1999
6-Month
23.35"
(593.09mm)
28.95"
(735.33mm)
-5.60"
(-142.24mm)
22nd Driest
Driest since:
1924
107th Wettest
Wettest since:
2021
Mar–Sep 1999
7-Month
28.84"
(732.54mm)
33.90"
(861.06mm)
-5.06"
(-128.52mm)
30th Driest
Driest since:
1924
99th Wettest
Wettest since:
2021
Feb–Sep 1999
8-Month
30.22"
(767.59mm)
38.53"
(978.66mm)
-8.31"
(-211.07mm)
15th Driest
Driest since:
1924
114th Wettest
Wettest since:
2021
Jan–Sep 1999
9-Month
38.77"
(984.76mm)
43.67"
(1,109.22mm)
-4.90"
(-124.46mm)
32nd Driest
Driest since:
1954
97th Wettest
Wettest since:
1991
Ties: 2009
Dec 1998–Sep 1999
10-Month
44.28"
(1,124.71mm)
49.15"
(1,248.41mm)
-4.87"
(-123.70mm)
41st Driest
Driest since:
2011
87th Wettest
Wettest since:
1991
Nov 1998–Sep 1999
11-Month
49.46"
(1,256.28mm)
53.41"
(1,356.61mm)
-3.95"
(-100.33mm)
43rd Driest
Driest since:
2000
85th Wettest
Wettest since:
1991
Oct 1998–Sep 1999
12-Month
52.30"
(1,328.42mm)
56.84"
(1,443.74mm)
-4.54"
(-115.32mm)
41st Driest
Driest since:
1918
87th Wettest
Wettest since:
1991
Apr 1998–Sep 1999
18-Month
78.21"
(1,986.53mm)
85.94"
(2,182.88mm)
-7.73"
(-196.35mm)
22nd Driest
Driest since:
1925
106th Wettest
Wettest since:
2016
Oct 1997–Sep 1999
24-Month
117.08"
(2,973.83mm)
113.94"
(2,894.08mm)
3.14"
(79.75mm)
76th Driest
Driest since:
1918
51st Wettest
Wettest since:
2017
Oct 1996–Sep 1999
36-Month
179.33"
(4,554.98mm)
170.98"
(4,342.89mm)
8.35"
(212.09mm)
85th Driest
Driest since:
1918
41st Wettest
Wettest since:
1975
Oct 1995–Sep 1999
48-Month
233.24"
(5,924.30mm)
228.02"
(5,791.71mm)
5.22"
(132.59mm)
77th Driest
Driest since:
1918
48th Wettest
Wettest since:
1975
Oct 1994–Sep 1999
60-Month
295.74"
(7,511.80mm)
284.94"
(7,237.48mm)
10.80"
(274.32mm)
87th Driest
Driest since:
1918
37th Wettest
Wettest since:
2020

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