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 November 2019. For more information, please see Climatological Rankings.


Pennsylvania

Precipitation Rankings, December 1999

View Period (Months):All1234567891011121824364860
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  • Record Driest
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2018)
Wettest/Driest
Since
Record
December 1999
1-Month
2.44"
(61.98mm)
3.11"
(78.99mm)
-0.67"
(-17.01mm)
31st Driest Driest since: 1998 1955
94th Wettest Wettest since: 1997 1990
Nov–Dec 1999
2-Month
5.81"
(147.57mm)
6.29"
(159.77mm)
-0.48"
(-12.20mm)
46th Driest Driest since: 1998 1917
79th Wettest Wettest since: 1997 1972
Oct–Dec 1999
3-Month
8.09"
(205.49mm)
9.46"
(240.28mm)
-1.37"
(-34.79mm)
35th Driest Driest since: 1998 1924
90th Wettest Wettest since: 1997 1927
Sep–Dec 1999
4-Month
14.74"
(374.40mm)
13.04"
(331.22mm)
1.70"
(43.18mm)
90th Driest Driest since: 1998 1908
35th Wettest Wettest since: 1996 2018
Ties: 2008
Aug–Dec 1999
5-Month
18.41"
(467.61mm)
16.91"
(429.51mm)
1.50"
(38.10mm)
80th Driest Driest since: 1998 1930
45th Wettest Wettest since: 1996 2018
Ties: 1956
Jul–Dec 1999
6-Month
21.03"
(534.16mm)
21.10"
(535.94mm)
-0.07"
(-1.78mm)
54th Driest Driest since: 1998 1930
71st Wettest Wettest since: 1997 2018
Ties: 1925, 1997
Jun–Dec 1999
7-Month
23.40"
(594.36mm)
25.27"
(641.86mm)
-1.87"
(-47.50mm)
34th Driest Driest since: 1998 1930
91st Wettest Wettest since: 1997 2018
May–Dec 1999
8-Month
25.96"
(659.38mm)
29.19"
(741.43mm)
-3.23"
(-82.05mm)
23rd Driest Driest since: 1998 1930
102nd Wettest Wettest since: 1997 2018
Apr–Dec 1999
9-Month
29.92"
(759.97mm)
32.84"
(834.14mm)
-2.92"
(-74.17mm)
28th Driest Driest since: 1998 1930
97th Wettest Wettest since: 1997 2018
Mar–Dec 1999
10-Month
33.38"
(847.85mm)
36.33"
(922.78mm)
-2.95"
(-74.93mm)
29th Driest Driest since: 1998 1930
96th Wettest Wettest since: 1997 2011
Feb–Dec 1999
11-Month
35.28"
(896.11mm)
38.93"
(988.82mm)
-3.65"
(-92.71mm)
24th Driest Driest since: 1995 1930
101st Wettest Wettest since: 1998 2018
Jan–Dec 1999
12-Month
41.12"
(1,044.45mm)
41.98"
(1,066.29mm)
-0.86"
(-21.84mm)
50th Driest Driest since: 1998 1930
75th Wettest Wettest since: 1996 2018
Jul 1998–Dec 1999
18-Month
54.78"
(1,391.41mm)
63.09"
(1,602.49mm)
-8.31"
(-211.08mm)
12th Driest Driest since: 1966 1931
112th Wettest Wettest since: 1998 2018
Jan 1998–Dec 1999
24-Month
81.53"
(2,070.86mm)
83.92"
(2,131.57mm)
-2.39"
(-60.71mm)
36th Driest Driest since: 1998 1931
88th Wettest Wettest since: 1997 2018
Jan 1997–Dec 1999
36-Month
120.33"
(3,056.38mm)
125.86"
(3,196.84mm)
-5.53"
(-140.46mm)
24th Driest Driest since: 1988 1965
99th Wettest Wettest since: 1998 2004
Jan 1996–Dec 1999
48-Month
176.64"
(4,486.66mm)
167.85"
(4,263.39mm)
8.79"
(223.27mm)
93rd Driest Driest since: 1998 1966
29th Wettest Wettest since: 1997 2006
Jan 1995–Dec 1999
60-Month
214.15"
(5,439.41mm)
209.87"
(5,330.70mm)
4.28"
(108.71mm)
73rd Driest Driest since: 1995 1966
48th Wettest Wettest since: 1998 2007

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published December 2019, retrieved on December 10, 2019 from https://www.ncdc.noaa.gov/cag/