Climate at a Glance

Regional 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 June 2021. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, December 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
December 1999
1-Month
4.16"
(105.66mm)
4.63"
(117.60mm)
-0.47"
(-11.94mm)
53rd Driest Driest since: 1997 1976
74th Wettest Wettest since: 1998 1964
Nov–Dec 1999
2-Month
8.89"
(225.81mm)
8.97"
(227.84mm)
-0.08"
(-2.03mm)
65th Driest Driest since: 1997 1976
62nd Wettest Wettest since: 1998 1996
Oct–Dec 1999
3-Month
11.05"
(280.67mm)
11.51"
(292.35mm)
-0.46"
(-11.68mm)
53rd Driest Driest since: 1997 1976
74th Wettest Wettest since: 1998 1996
Sep–Dec 1999
4-Month
11.24"
(285.50mm)
12.93"
(328.42mm)
-1.69"
(-42.92mm)
38th Driest Driest since: 1993 1976
89th Wettest Wettest since: 1998 1996
Aug–Dec 1999
5-Month
12.39"
(314.71mm)
13.73"
(348.74mm)
-1.34"
(-34.03mm)
44th Driest Driest since: 1993 1936
83rd Wettest Wettest since: 1998 1996
Jul–Dec 1999
6-Month
12.82"
(325.63mm)
14.46"
(367.28mm)
-1.64"
(-41.65mm)
41st Driest Driest since: 1993 1936
86th Wettest Wettest since: 1998 1996
Jun–Dec 1999
7-Month
14.28"
(362.71mm)
16.18"
(410.97mm)
-1.90"
(-48.26mm)
41st Driest Driest since: 1993 1976
86th Wettest Wettest since: 1998 1996
May–Dec 1999
8-Month
16.49"
(418.85mm)
18.32"
(465.33mm)
-1.83"
(-46.48mm)
42nd Driest Driest since: 1993 1935
85th Wettest Wettest since: 1998 1996
Apr–Dec 1999
9-Month
17.98"
(456.69mm)
20.67"
(525.02mm)
-2.69"
(-68.33mm)
29th Driest Driest since: 1989 1976
98th Wettest Wettest since: 1998 1996
Mar–Dec 1999
10-Month
20.99"
(533.15mm)
23.93"
(607.82mm)
-2.94"
(-74.67mm)
30th Driest Driest since: 1987 1976
97th Wettest Wettest since: 1998 1996
Feb–Dec 1999
11-Month
28.15"
(715.01mm)
27.54"
(699.52mm)
0.61"
(15.49mm)
67th Driest Driest since: 1994 1935
60th Wettest Wettest since: 1998 1996
Jan–Dec 1999
12-Month
33.40"
(848.36mm)
32.07"
(814.58mm)
1.33"
(33.78mm)
79th Driest Driest since: 1994 1929
48th Wettest Wettest since: 1998 1996
Jul 1998–Dec 1999
18-Month
51.10"
(1,297.94mm)
46.58"
(1,183.13mm)
4.52"
(114.81mm)
100th Driest Driest since: 1994 1929
26th Wettest Wettest since: 1998 1996
Jan 1998–Dec 1999
24-Month
73.16"
(1,858.26mm)
64.19"
(1,630.43mm)
8.97"
(227.83mm)
116th Driest Driest since: 1995 1930
10th Wettest Wettest since: 1998 1996
Jan 1997–Dec 1999
36-Month
108.31"
(2,751.07mm)
96.33"
(2,446.78mm)
11.98"
(304.29mm)
117th Driest Driest since: 1995 1930
8th Wettest Wettest since: 1998 1997
Jan 1996–Dec 1999
48-Month
153.18"
(3,890.77mm)
128.33"
(3,259.58mm)
24.85"
(631.19mm)
122nd Driest Driest since: 1997 1931
2nd Wettest Wettest since: 1998 1998
Jan 1995–Dec 1999
60-Month
193.76"
(4,921.50mm)
160.34"
(4,072.64mm)
33.42"
(848.86mm)
122nd Driest Driest since: 1998 1932
1st Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published July 2021, retrieved on July 25, 2021 from https://www.ncdc.noaa.gov/cag/