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.

Pennsylvania

Precipitation Rankings, October 2018

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  • Record Wettest
PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Wettest/Driest
Since		Record
October 2018
1-Month		4.28"
(108.71mm)		3.17"
(80.52mm)		1.11"
(28.19mm)		91st Driest
Driest since:
1963
38th Wettest
Wettest since:
1976
Sep–Oct 2018
2-Month		13.16"
(334.26mm)		6.75"
(171.45mm)		6.41"
(162.81mm)		127th Driest
Driest since:
1963
2nd Wettest
Wettest since:
2011
Aug–Oct 2018
3-Month		19.42"
(493.27mm)		10.62"
(269.75mm)		8.80"
(223.52mm)		127th Driest
Driest since:
1930
2nd Wettest
Wettest since:
2011
Jul–Oct 2018
4-Month		26.95"
(684.53mm)		14.81"
(376.17mm)		12.14"
(308.36mm)		128th Driest
Driest since:
1930
1st Wettest
Wettest to Date
2018
Jun–Oct 2018
5-Month		32.27"
(819.66mm)		18.98"
(482.09mm)		13.29"
(337.57mm)		128th Driest
Driest since:
1930
1st Wettest
Wettest to Date
2018
May–Oct 2018
6-Month		37.75"
(958.85mm)		22.91"
(581.91mm)		14.84"
(376.94mm)		128th Driest
Driest since:
1930
1st Wettest
Wettest to Date
2018
Apr–Oct 2018
7-Month		41.92"
(1,064.77mm)		26.55"
(674.37mm)		15.37"
(390.40mm)		128th Driest
Driest since:
1963
1st Wettest
Wettest to Date
2018
Mar–Oct 2018
8-Month		45.04"
(1,144.02mm)		30.04"
(763.02mm)		15.00"
(381.00mm)		127th Driest
Driest since:
1930
2nd Wettest
Wettest since:
2011
Feb–Oct 2018
9-Month		50.44"
(1,281.18mm)		32.64"
(829.06mm)		17.80"
(452.12mm)		127th Driest
Driest since:
1963
2nd Wettest
Wettest since:
2011
Jan–Oct 2018
10-Month		53.72"
(1,364.49mm)		35.69"
(906.53mm)		18.03"
(457.96mm)		128th Driest
Driest since:
1963
1st Wettest
Wettest to Date
2018
Dec 2017–Oct 2018
11-Month		55.42"
(1,407.67mm)		38.79"
(985.27mm)		16.63"
(422.40mm)		126th Driest
Driest since:
1963
2nd Wettest
Wettest since:
2011
Nov 2017–Oct 2018
12-Month		58.31"
(1,481.07mm)		42.00"
(1,066.80mm)		16.31"
(414.27mm)		126th Driest
Driest since:
1963
2nd Wettest
Wettest since:
2011
May 2017–Oct 2018
18-Month		86.01"
(2,184.65mm)		64.86"
(1,647.44mm)		21.15"
(537.21mm)		125th Driest
Driest since:
1963
3rd Wettest
Wettest since:
2019
Nov 2016–Oct 2018
24-Month		105.44"
(2,678.18mm)		83.94"
(2,132.08mm)		21.50"
(546.10mm)		124th Driest
Driest since:
1964
3rd Wettest
Wettest since:
2019
Nov 2015–Oct 2018
36-Month		145.49"
(3,695.45mm)		125.92"
(3,198.37mm)		19.57"
(497.08mm)		116th Driest
Driest since:
1965
10th Wettest
Wettest since:
2019
Nov 2014–Oct 2018
48-Month		187.83"
(4,770.88mm)		167.91"
(4,264.91mm)		19.92"
(505.97mm)		113th Driest
Driest since:
1966
12th Wettest
Wettest since:
2021
Nov 2013–Oct 2018
60-Month		232.27"
(5,899.66mm)		209.89"
(5,331.21mm)		22.38"
(568.45mm)		111th Driest
Driest since:
1966
13th Wettest
Wettest since:
2021

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