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.

California

Precipitation Rankings, September 1998

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  • Record Wettest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Wettest/Driest
Since		 Record
September 1998
1-Month 		0.74"
(18.80mm)		 0.45"
(11.43mm)		 0.29"
(7.37mm)		 105th Driest
Driest since:
 1974
24th Wettest
Wettest since:
 1918
Aug–Sep 1998
2-Month 		0.87"
(22.10mm)		 0.69"
(17.53mm)		 0.18"
(4.57mm)		 96th Driest
Driest since:
 1937, 2018
33rd Wettest
Wettest since:
 1983
Jul–Sep 1998
3-Month 		1.07"
(27.18mm)		 0.87"
(22.10mm)		 0.20"
(5.08mm)		 95th Driest
Driest since:
 1928
34th Wettest
Wettest since:
 1976
Ties: 1979, 2015
Jun–Sep 1998
4-Month 		1.84"
(46.74mm)		 1.22"
(30.99mm)		 0.62"
(15.75mm)		 115th Driest
Driest since:
 2002
14th Wettest
Wettest since:
 1982
Ties: 1925
May–Sep 1998
5-Month 		4.87"
(123.70mm)		 2.10"
(53.34mm)		 2.77"
(70.36mm)		 128th Driest
Driest since:
 1924
1st Wettest
Wettest to Date
 1998
Apr–Sep 1998
6-Month 		7.04"
(178.82mm)		 3.74"
(95.00mm)		 3.30"
(83.82mm)		 126th Driest
Driest since:
 1924
3rd Wettest
Wettest since:
 1896
Mar–Sep 1998
7-Month 		11.19"
(284.23mm)		 6.95"
(176.53mm)		 4.24"
(107.70mm)		 117th Driest
Driest since:
 2008
12th Wettest
Wettest since:
 1995
Feb–Sep 1998
8-Month 		22.69"
(576.33mm)		 10.80"
(274.32mm)		 11.89"
(302.01mm)		 128th Driest
Driest since:
 2021
1st Wettest
Wettest to Date
 1998
Jan–Sep 1998
9-Month 		29.66"
(753.36mm)		 15.05"
(382.27mm)		 14.61"
(371.09mm)		 128th Driest
Driest since:
 2022
1st Wettest
Wettest to Date
 1998
Dec 1997–Sep 1998
10-Month 		32.62"
(828.55mm)		 18.67"
(474.22mm)		 13.95"
(354.33mm)		 126th Driest
Driest since:
 1924
2nd Wettest
Wettest since:
 1983
Nov 1997–Sep 1998
11-Month 		36.57"
(928.88mm)		 21.25"
(539.75mm)		 15.32"
(389.13mm)		 126th Driest
Driest since:
 1924
2nd Wettest
Wettest since:
 1983
Oct 1997–Sep 1998
12-Month 		37.65"
(956.31mm)		 22.45"
(570.23mm)		 15.20"
(386.08mm)		 126th Driest
Driest since:
 1924
2nd Wettest
Wettest since:
 1983
Apr 1997–Sep 1998
18-Month 		41.09"
(1,043.69mm)		 26.19"
(665.23mm)		 14.90"
(378.46mm)		 126th Driest
Driest since:
 2021
2nd Wettest
Wettest since:
 1983
Oct 1996–Sep 1998
24-Month 		64.27"
(1,632.46mm)		 44.90"
(1,140.46mm)		 19.37"
(492.00mm)		 125th Driest
Driest since:
 1977
2nd Wettest
Wettest since:
 1983
Oct 1995–Sep 1998
36-Month 		88.96"
(2,259.58mm)		 67.32"
(1,709.93mm)		 21.64"
(549.65mm)		 123rd Driest
Driest since:
 2022
3rd Wettest
Wettest since:
 1984
Oct 1994–Sep 1998
48-Month 		125.14"
(3,178.56mm)		 89.51"
(2,273.55mm)		 35.63"
(905.01mm)		 124th Driest
Driest since:
 2015
1st Wettest
Wettest to Date
 1998
Oct 1993–Sep 1998
60-Month 		140.27"
(3,562.86mm)		 111.69"
(2,836.93mm)		 28.58"
(725.93mm)		 120th Driest
Driest since:
 1991
4th Wettest
Wettest since:
 1999

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