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


Iowa

Palmer Modified Drought Index (PMDI) Rankings, September 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
(1895-2021)
Wettest/Driest
Since
Record
September 1989
1-Month
-3.60 0.20 -3.80 6th Driest Driest since: 1988 1934
122nd Wettest Wettest since: 1987 1993

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2022, retrieved on August 13, 2022 from https://www.ncei.noaa.gov/cag/