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 August 2022. For more information, please see Climatological Rankings.


Iowa

Palmer Modified Drought Index (PMDI) Rankings, April 1989

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  • Record Driest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Wettest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Wettest/Driest
Since
Record
April 1989
1-Month
-5.24 0.14 -5.38 4th Driest Driest since: 1957 1956
125th Wettest Wettest since: 1988 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Palmer Modified Drought Index (PMDI), published September 2022, retrieved on September 28, 2022 from https://www.ncdc.noaa.gov/cag/