Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of April 2020. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, December 2018

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Wettest/Driest
Since
Record
December 2018
1-Month
4.26"
(108.20mm)
3.11"
(78.99mm)
1.15"
(29.21mm)
104th Driest Driest since: 2017 1955
22nd Wettest Wettest since: 2012 1990
Nov–Dec 2018
2-Month
10.32"
(262.13mm)
6.29"
(159.77mm)
4.03"
(102.36mm)
122nd Driest Driest since: 2017 1917
4th Wettest Wettest since: 1985 1972
Oct–Dec 2018
3-Month
14.60"
(370.84mm)
9.46"
(240.28mm)
5.14"
(130.56mm)
124th Driest Driest since: 2017 1924
2nd Wettest Wettest since: 1927 1927
Sep–Dec 2018
4-Month
23.48"
(596.39mm)
13.04"
(331.22mm)
10.44"
(265.17mm)
125th Driest Driest since: 2017 1908
1st Wettest Wettest to Date 2018
Aug–Dec 2018
5-Month
29.74"
(755.40mm)
16.91"
(429.51mm)
12.83"
(325.89mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Jul–Dec 2018
6-Month
37.27"
(946.66mm)
21.10"
(535.94mm)
16.17"
(410.72mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Jun–Dec 2018
7-Month
42.59"
(1,081.79mm)
25.27"
(641.86mm)
17.32"
(439.93mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
May–Dec 2018
8-Month
48.07"
(1,220.98mm)
29.19"
(741.43mm)
18.88"
(479.55mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Apr–Dec 2018
9-Month
52.24"
(1,326.90mm)
32.84"
(834.14mm)
19.40"
(492.76mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Mar–Dec 2018
10-Month
55.36"
(1,406.14mm)
36.33"
(922.78mm)
19.03"
(483.36mm)
124th Driest Driest since: 2017 1930
2nd Wettest Wettest since: 2011 2011
Feb–Dec 2018
11-Month
60.76"
(1,543.30mm)
38.93"
(988.82mm)
21.83"
(554.48mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Jan–Dec 2018
12-Month
64.04"
(1,626.62mm)
41.98"
(1,066.29mm)
22.06"
(560.33mm)
125th Driest Driest since: 2017 1930
1st Wettest Wettest to Date 2018
Jul 2017–Dec 2018
18-Month
85.76"
(2,178.30mm)
63.09"
(1,602.49mm)
22.67"
(575.81mm)
123rd Driest Driest since: 2017 1931
2nd Wettest Wettest to Date 2019
Jan 2017–Dec 2018
24-Month
110.65"
(2,810.51mm)
83.92"
(2,131.57mm)
26.73"
(678.94mm)
123rd Driest Driest since: 2017 1931
2nd Wettest Wettest to Date 2019
Jan 2016–Dec 2018
36-Month
149.65"
(3,801.11mm)
125.86"
(3,196.84mm)
23.79"
(604.27mm)
120th Driest Driest since: 2017 1965
4th Wettest Wettest since: 2005 2019
Jan 2015–Dec 2018
48-Month
192.75"
(4,895.85mm)
167.85"
(4,263.39mm)
24.90"
(632.46mm)
119th Driest Driest since: 2017 1966
4th Wettest Wettest since: 2006 2019
Jan 2014–Dec 2018
60-Month
235.18"
(5,973.57mm)
209.87"
(5,330.70mm)
25.31"
(642.87mm)
116th Driest Driest since: 2017 1966
6th Wettest Wettest since: 2012 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2020, retrieved on May 27, 2020 from https://www.ncdc.noaa.gov/cag/