NOAA's National Centers for Environmental Information
Divisional Rankings
Iowa, Climate Division 8
December 2022 Palmer Z-Index Rankings
| Period | Value | 1901-2000 Mean | Anomaly | Rank (1895-2025) | Driest/Wettest Since | Record |
|---|---|---|---|---|---|---|
| December 2022 1-Month | 0.41 | -0.11 | 0.52 | 89th Driest | Driest since: | 1910 |
| 42nd Wettest | Wettest since: | 2015 | ||||
| Nov– 2-Month | 0.56 | -0.08 | 0.64 | 90th Driest | Driest since: | 1917 |
| 41st Wettest | Wettest since: | 2015 | ||||
| Oct– 3-Month | -0.17 | -0.05 | -0.12 | 57th Driest | Driest since: | 1953 |
| 74th Wettest | Wettest since: | 1931 | ||||
| Sep– 4-Month | -0.48 | 0.00 | -0.48 | 46th Driest | Driest since: | 1953 |
| 85th Wettest | Wettest since: | 1931, 1941 | ||||
| Aug– 5-Month | -0.82 | -0.02 | -0.80 | 36th Driest | Driest since: | 1953 |
| 95th Wettest | Wettest since: | 1902 | ||||
| Jul– 6-Month | -0.96 | 0.01 | -0.97 | 31st Driest | Driest since: | 1953 |
| 100th Wettest | Wettest since: | 1902 | ||||
| Jun– 7-Month | -1.00 | 0.02 | -1.02 | 27th Driest | Driest since: | 1953 |
| 104th Wettest | Wettest since: | 1902 | ||||
| Ties: 1899 | ||||||
| May– 8-Month | -0.94 | 0.04 | -0.98 | 23rd Driest | Driest since: | 1953 |
| 108th Wettest | Wettest since: | 1902 | ||||
| Apr– 9-Month | -0.77 | 0.05 | -0.82 | 22nd Driest | Driest since: | 1988 |
| 109th Wettest | Wettest since: | 2008 | ||||
| Mar– 10-Month | -0.57 | 0.03 | -0.60 | 32nd Driest | Driest since: | 1934 |
| 99th Wettest | Wettest since: | 1993 | ||||
| Ties: 1917 | ||||||
| Feb– 11-Month | -0.59 | 0.04 | -0.63 | 30th Driest | Driest since: | 1934 |
| 101st Wettest | Wettest since: | 2008 | ||||
| Jan– 12-Month | -0.47 | 0.04 | -0.51 | 35th Driest | Driest since: | 1956 |
| 96th Wettest | Wettest since: | 1993 | ||||
| Ties: 2003 | ||||||
| Jul 2021– 18-Month | -0.06 | 0.04 | -0.10 | 54th Driest | Driest since: | 1956 |
| 76th Wettest | Wettest since: | 1993 | ||||
| Jan 2021– 24-Month | -0.04 | 0.04 | -0.08 | 55th Driest | Driest since: | 1934 |
| 75th Wettest | Wettest since: | 2009 | ||||
| Jan 2020– 36-Month | -0.04 | 0.04 | -0.08 | 48th Driest | Driest since: | 1956 |
| 81st Wettest | Wettest since: | 2010 | ||||
| Ties: 1917, 1932 | ||||||
| Jan 2019– 48-Month | 0.30 | 0.04 | 0.26 | 83rd Driest | Driest since: | 1956 |
| 45th Wettest | Wettest since: | 2010 | ||||
| Jan 2018– 60-Month | 0.37 | 0.04 | 0.33 | 92nd Driest | Driest since: | 1957 |
| 35th Wettest | Wettest since: | 2011 | ||||
| Ties: 1977, 2014 | ||||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Divisional Rankings, published March 2025, retrieved on March 31, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/divisional/rankings
