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 September 2021. For more information, please see Climatological Rankings.
Iowa
Precipitation Rankings, December 1939
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2020) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
December 1939 1-Month |
0.60" (15.24mm) | 1.11" (28.19mm) |
-0.51" (-12.95mm) | 27th Driest | Driest since: 1934 | 2002 |
| 100th Wettest | Wettest since: 1938 | 2015 | ||||
|
Nov–Dec 1939 2-Month |
1.09" (27.69mm) | 2.87" (72.90mm) |
-1.78" (-45.21mm) | 11th Driest | Driest since: 1917 | 1976 |
| 116th Wettest | Wettest since: 1938 | 2015 | ||||
|
Oct–Dec 1939 3-Month |
2.57" (65.28mm) | 5.16" (131.06mm) |
-2.59" (-65.78mm) | 8th Driest | Driest since: 1917 | 1910 |
| 119th Wettest | Wettest since: 1938 | 1931 | ||||
|
Sep–Dec 1939 4-Month |
3.41" (86.61mm) | 8.83" (224.28mm) |
-5.42" (-137.67mm) | 1st Driest | Driest to Date | 1939, 1976 |
| 126th Wettest | Wettest since: 1938 | 1931 | ||||
| Ties: 1976 | ||||||
|
Aug–Dec 1939 5-Month |
8.08" (205.23mm) | 12.67" (321.82mm) |
-4.59" (-116.59mm) | 9th Driest | Driest since: 1917 | 1976 |
| 118th Wettest | Wettest since: 1938 | 2018 | ||||
|
Jul–Dec 1939 6-Month |
11.28" (286.51mm) | 16.52" (419.61mm) |
-5.24" (-133.10mm) | 11th Driest | Driest since: 1930 | 1976 |
| 116th Wettest | Wettest since: 1938 | 2018 | ||||
|
Jun–Dec 1939 7-Month |
16.20" (411.48mm) | 21.15" (537.21mm) |
-4.95" (-125.73mm) | 13th Driest | Driest since: 1937 | 1976 |
| 114th Wettest | Wettest since: 1938 | 2018 | ||||
|
May–Dec 1939 8-Month |
18.24" (463.30mm) | 25.20" (640.08mm) |
-6.96" (-176.78mm) | 8th Driest | Driest since: 1910 | 1976 |
| 119th Wettest | Wettest since: 1938 | 1993 | ||||
|
Apr–Dec 1939 9-Month |
20.24" (514.10mm) | 28.15" (715.01mm) |
-7.91" (-200.91mm) | 7th Driest | Driest since: 1933 | 1910 |
| 120th Wettest | Wettest since: 1938 | 1993 | ||||
|
Mar–Dec 1939 10-Month |
21.87" (555.50mm) | 30.10" (764.54mm) |
-8.23" (-209.04mm) | 4th Driest | Driest since: 1910 | 1910 |
| 123rd Wettest | Wettest since: 1938 | 1993 | ||||
|
Feb–Dec 1939 11-Month |
23.64" (600.46mm) | 31.12" (790.45mm) |
-7.48" (-189.99mm) | 6th Driest | Driest since: 1933 | 1910 |
| 121st Wettest | Wettest since: 1938 | 1993 | ||||
|
Jan–Dec 1939 12-Month |
24.50" (622.30mm) | 32.09" (815.09mm) |
-7.59" (-192.79mm) | 6th Driest | Driest since: 1933 | 1910 |
| 121st Wettest | Wettest since: 1938 | 1993 | ||||
| Ties: 1901, 1933 | ||||||
|
Jul 1938–Dec 1939 18-Month |
42.76" (1,086.10mm) | 48.69" (1,236.73mm) |
-5.93" (-150.63mm) | 24th Driest | Driest since: 1937 | 1956 |
| 102nd Wettest | Wettest since: 1938 | 1993 | ||||
|
Jan 1938–Dec 1939 24-Month |
60.82" (1,544.83mm) | 64.24" (1,631.70mm) |
-3.42" (-86.87mm) | 40th Driest | Driest since: 1937 | 1989 |
| 86th Wettest | Wettest since: 1938 | 2019 | ||||
|
Jan 1937–Dec 1939 36-Month |
88.32" (2,243.33mm) | 96.36" (2,447.54mm) |
-8.04" (-204.21mm) | 16th Driest | Driest since: 1937 | 1957 |
| 109th Wettest | Wettest since: 1938 | 2010 | ||||
|
Jan 1936–Dec 1939 48-Month |
113.86" (2,892.04mm) | 128.37" (3,260.60mm) |
-14.51" (-368.56mm) | 8th Driest | Driest since: 1937 | 1958 |
| 116th Wettest | Wettest since: 1938 | 2010 | ||||
|
Jan 1935–Dec 1939 60-Month |
146.39" (3,718.31mm) | 160.36" (4,073.14mm) |
-13.97" (-354.83mm) | 12th Driest | Driest since: 1937 | 1956 |
| 111th Wettest | Wettest since: 1938 | 2010 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 22, 2021 from https://www.ncdc.noaa.gov/cag/