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.

Iowa

Precipitation Rankings, December 1999

View Period (Months):
Download: csv json xml
  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Wettest/Driest
Since
Record
December 1999
1-Month
0.71"
(18.03mm)
1.11"
(28.19mm)
-0.40"
(-10.16mm)
34th Driest
Driest since:
2002
94th Wettest
Wettest since:
2015
Ties: 1912
Nov–Dec 1999
2-Month
1.73"
(43.94mm)
2.87"
(72.90mm)
-1.14"
(-28.96mm)
28th Driest
Driest since:
1976
100th Wettest
Wettest since:
2015
Ties: 1969
Oct–Dec 1999
3-Month
2.50"
(63.50mm)
5.16"
(131.06mm)
-2.66"
(-67.56mm)
6th Driest
Driest since:
1910
122nd Wettest
Wettest since:
1931
Sep–Dec 1999
4-Month
4.34"
(110.24mm)
8.83"
(224.28mm)
-4.49"
(-114.04mm)
4th Driest
Driest since:
1939, 1976
124th Wettest
Wettest since:
1931
Aug–Dec 1999
5-Month
7.45"
(189.23mm)
12.67"
(321.82mm)
-5.22"
(-132.59mm)
8th Driest
Driest since:
1976
120th Wettest
Wettest since:
2018
Jul–Dec 1999
6-Month
12.66"
(321.56mm)
16.52"
(419.61mm)
-3.86"
(-98.05mm)
19th Driest
Driest since:
1976
109th Wettest
Wettest since:
2018
Jun–Dec 1999
7-Month
17.95"
(455.93mm)
21.15"
(537.21mm)
-3.20"
(-81.28mm)
28th Driest
Driest since:
1976
100th Wettest
Wettest since:
2018
May–Dec 1999
8-Month
22.84"
(580.14mm)
25.20"
(640.08mm)
-2.36"
(-59.94mm)
36th Driest
Driest since:
1976
92nd Wettest
Wettest since:
1993
Apr–Dec 1999
9-Month
29.10"
(739.14mm)
28.15"
(715.01mm)
0.95"
(24.13mm)
73rd Driest
Driest since:
1910
55th Wettest
Wettest since:
1993
Ties: 1987
Mar–Dec 1999
10-Month
30.08"
(764.03mm)
30.10"
(764.54mm)
-0.02"
(-0.51mm)
61st Driest
Driest since:
1910
67th Wettest
Wettest since:
1993
Feb–Dec 1999
11-Month
30.99"
(787.15mm)
31.12"
(790.45mm)
-0.13"
(-3.30mm)
65th Driest
Driest since:
1910
63rd Wettest
Wettest since:
1993
Jan–Dec 1999
12-Month
32.28"
(819.91mm)
32.09"
(815.09mm)
0.19"
(4.82mm)
67th Driest
Driest since:
1910
61st Wettest
Wettest since:
1993
Jul 1998–Dec 1999
18-Month
49.37"
(1,254.00mm)
48.69"
(1,236.73mm)
0.68"
(17.27mm)
71st Driest
Driest since:
1956
56th Wettest
Wettest since:
1993
Jan 1998–Dec 1999
24-Month
71.85"
(1,824.99mm)
64.24"
(1,631.70mm)
7.61"
(193.29mm)
104th Driest
Driest since:
1989
23rd Wettest
Wettest since:
2019
Jan 1997–Dec 1999
36-Month
101.06"
(2,566.92mm)
96.36"
(2,447.54mm)
4.70"
(119.38mm)
85th Driest
Driest since:
1957
41st Wettest
Wettest since:
2010
Jan 1996–Dec 1999
48-Month
134.72"
(3,421.89mm)
128.37"
(3,260.60mm)
6.35"
(161.29mm)
87th Driest
Driest since:
1958
38th Wettest
Wettest since:
2010
Jan 1995–Dec 1999
60-Month
166.98"
(4,241.29mm)
160.36"
(4,073.14mm)
6.62"
(168.15mm)
82nd Driest
Driest since:
1956
42nd Wettest
Wettest since:
2010

Citing This Page