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 July 2020. For more information, please see Climatological Rankings.


Northwest Climate Region

Precipitation Rankings, May 1999

View Period (Months):All1234567891011121824364860
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  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Wettest/Driest
Since
Record
May 1999
1-Month
2.21"
(56.13mm)
2.14"
(54.36mm)
0.07"
(1.77mm)
68th Driest Driest since: 1997 1924
59th Wettest Wettest since: 1998 1998
Apr–May 1999
2-Month
3.70"
(93.98mm)
4.50"
(114.30mm)
-0.80"
(-20.32mm)
29th Driest Driest since: 1985 1924
98th Wettest Wettest since: 1998 1996
Ties: 1936
Mar–May 1999
3-Month
6.71"
(170.43mm)
7.76"
(197.10mm)
-1.05"
(-26.67mm)
34th Driest Driest since: 1994 1924
93rd Wettest Wettest since: 1998 2011
Feb–May 1999
4-Month
13.87"
(352.30mm)
11.37"
(288.80mm)
2.50"
(63.50mm)
110th Driest Driest since: 1998 1924
17th Wettest Wettest since: 1996 1904
Jan–May 1999
5-Month
19.12"
(485.65mm)
15.90"
(403.86mm)
3.22"
(81.79mm)
112th Driest Driest since: 1997 1924
15th Wettest Wettest since: 1998 1904
Dec 1998–May 1999
6-Month
25.31"
(642.87mm)
20.54"
(521.72mm)
4.77"
(121.15mm)
113th Driest Driest since: 1998 1977
13th Wettest Wettest since: 1997 1997
Nov 1998–May 1999
7-Month
32.63"
(828.80mm)
24.89"
(632.21mm)
7.74"
(196.59mm)
122nd Driest Driest since: 1998 1977
4th Wettest Wettest since: 1997 1974
Oct 1998–May 1999
8-Month
34.40"
(873.76mm)
27.45"
(697.23mm)
6.95"
(176.53mm)
120th Driest Driest since: 1998 1977
6th Wettest Wettest since: 1997 1974
Sep 1998–May 1999
9-Month
35.65"
(905.51mm)
28.87"
(733.30mm)
6.78"
(172.21mm)
117th Driest Driest since: 1998 1977
9th Wettest Wettest since: 1997 1974
Aug 1998–May 1999
10-Month
35.87"
(911.10mm)
29.68"
(753.87mm)
6.19"
(157.23mm)
115th Driest Driest since: 1998 1977
11th Wettest Wettest since: 1997 1974
Jul 1998–May 1999
11-Month
36.82"
(935.23mm)
30.40"
(772.16mm)
6.42"
(163.07mm)
115th Driest Driest since: 1998 1977
11th Wettest Wettest since: 1997 1974
Jun 1998–May 1999
12-Month
38.78"
(985.01mm)
32.13"
(816.10mm)
6.65"
(168.91mm)
114th Driest Driest since: 1998 1977
12th Wettest Wettest since: 1997 1996
Dec 1997–May 1999
18-Month
61.57"
(1,563.88mm)
52.65"
(1,337.31mm)
8.92"
(226.57mm)
116th Driest Driest since: 1995 1930
9th Wettest Wettest since: 1998 1997
Jun 1997–May 1999
24-Month
75.74"
(1,923.80mm)
64.28"
(1,632.71mm)
11.46"
(291.09mm)
117th Driest Driest since: 1995 1930
8th Wettest Wettest since: 1998 1997
Jun 1996–May 1999
36-Month
117.06"
(2,973.32mm)
96.36"
(2,447.54mm)
20.70"
(525.78mm)
120th Driest Driest since: 1996 1931
4th Wettest Wettest since: 1998 1998
Jun 1995–May 1999
48-Month
160.77"
(4,083.56mm)
128.40"
(3,261.36mm)
32.37"
(822.20mm)
122nd Driest Driest since: 1998 1931
1st Wettest Wettest to Date 1999
Jun 1994–May 1999
60-Month
196.08"
(4,980.43mm)
160.37"
(4,073.40mm)
35.71"
(907.03mm)
121st Driest Driest since: 1998 1933
1st Wettest Wettest to Date 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Regional Time Series, published August 2020, retrieved on August 11, 2020 from https://www.ncdc.noaa.gov/cag/