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
Precipitation Rankings, September 1939
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 1939 1-Month |
0.84" (21.34mm) | 3.67" (93.22mm) |
-2.83" (-71.88mm) | 1st Driest | Driest to Date | 1939 |
| 127th Wettest | Wettest since: 1938 | 1965 | ||||
|
Aug–Sep 1939 2-Month |
5.51" (139.95mm) | 7.51" (190.75mm) |
-2.00" (-50.80mm) | 26th Driest | Driest since: 1930 | 1976 |
| 102nd Wettest | Wettest since: 1938 | 2018 | ||||
|
Jul–Sep 1939 3-Month |
8.71" (221.23mm) | 11.36" (288.54mm) |
-2.65" (-67.31mm) | 26th Driest | Driest since: 1937 | 2013 |
| 102nd Wettest | Wettest since: 1938 | 1993 | ||||
|
Jun–Sep 1939 4-Month |
13.63" (346.20mm) | 16.00" (406.40mm) |
-2.37" (-60.20mm) | 32nd Driest | Driest since: 1937 | 2012 |
| 96th Wettest | Wettest since: 1938 | 1993 | ||||
|
May–Sep 1939 5-Month |
15.67" (398.02mm) | 20.04" (509.02mm) |
-4.37" (-111.00mm) | 11th Driest | Driest since: 1910 | 1976 |
| 117th Wettest | Wettest since: 1938 | 1993 | ||||
|
Apr–Sep 1939 6-Month |
17.67" (448.82mm) | 22.99" (583.95mm) |
-5.32" (-135.13mm) | 12th Driest | Driest since: 1934 | 1988 |
| 116th Wettest | Wettest since: 1938 | 1993 | ||||
|
Mar–Sep 1939 7-Month |
19.30" (490.22mm) | 24.94" (633.48mm) |
-5.64" (-143.26mm) | 9th Driest | Driest since: 1936 | 1988 |
| 119th Wettest | Wettest since: 1938 | 1993 | ||||
|
Feb–Sep 1939 8-Month |
21.07" (535.18mm) | 25.96" (659.38mm) |
-4.89" (-124.20mm) | 12th Driest | Driest since: 1936 | 1988 |
| 116th Wettest | Wettest since: 1938 | 1993 | ||||
|
Jan–Sep 1939 9-Month |
21.93" (557.02mm) | 26.93" (684.02mm) |
-5.00" (-127.00mm) | 13th Driest | Driest since: 1936 | 1988 |
| 115th Wettest | Wettest since: 1938 | 1993 | ||||
|
Dec 1938–Sep 1939 10-Month |
22.62" (574.55mm) | 28.04" (712.22mm) |
-5.42" (-137.67mm) | 11th Driest | Driest since: 1934 | 1988 |
| 116th Wettest | Wettest since: 1938 | 1993 | ||||
|
Nov 1938–Sep 1939 11-Month |
25.32" (643.13mm) | 29.78" (756.41mm) |
-4.46" (-113.28mm) | 15th Driest | Driest since: 1934 | 1934 |
| 112th Wettest | Wettest since: 1938 | 1993 | ||||
|
Oct 1938–Sep 1939 12-Month |
26.17" (664.72mm) | 32.09" (815.09mm) |
-5.92" (-150.37mm) | 9th Driest | Driest since: 1934 | 1934 |
| 118th Wettest | Wettest since: 1938 | 1993 | ||||
| Ties: 1901 | ||||||
|
Apr 1938–Sep 1939 18-Month |
53.87" (1,368.30mm) | 55.13" (1,400.30mm) |
-1.26" (-32.00mm) | 53rd Driest | Driest since: 1937 | 1934 |
| 74th Wettest | Wettest since: 1938 | 1993 | ||||
|
Oct 1937–Sep 1939 24-Month |
61.79" (1,569.47mm) | 64.26" (1,632.20mm) |
-2.47" (-62.73mm) | 49th Driest | Driest since: 1937 | 1956 |
| 77th Wettest | Wettest since: 1938 | 1993 | ||||
|
Oct 1936–Sep 1939 36-Month |
89.52" (2,273.81mm) | 96.36" (2,447.54mm) |
-6.84" (-173.73mm) | 23rd Driest | Driest since: 1937 | 1957 |
| 102nd Wettest | Wettest since: 1938 | 2010 | ||||
|
Oct 1935–Sep 1939 48-Month |
117.59" (2,986.79mm) | 128.36" (3,260.34mm) |
-10.77" (-273.55mm) | 12th Driest | Driest since: 1937 | 1958 |
| 112th Wettest | Wettest since: 1938 | 2010 | ||||
|
Oct 1934–Sep 1939 60-Month |
150.85" (3,831.59mm) | 160.34" (4,072.64mm) |
-9.49" (-241.05mm) | 20th Driest | Driest since: 1938 | 1957 |
| 103rd Wettest | Wettest since: 1933 | 2010 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2022, retrieved on August 16, 2022 from https://www.ncei.noaa.gov/cag/