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 May 2022. For more information, please see Climatological Rankings.
Iowa
Precipitation Rankings, September 1940
View Period (Months):All1234567891011121824364860
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| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 1940 1-Month |
0.87" (22.10mm) | 3.67" (93.22mm) |
-2.80" (-71.12mm) | 3rd Driest | Driest since: 1939 | 1939 |
| 125th Wettest | Wettest since: 1938 | 1965 | ||||
|
Aug–Sep 1940 2-Month |
7.29" (185.17mm) | 7.51" (190.75mm) |
-0.22" (-5.58mm) | 64th Driest | Driest since: 1939 | 1976 |
| 64th Wettest | Wettest since: 1938 | 2018 | ||||
|
Jul–Sep 1940 3-Month |
11.86" (301.24mm) | 11.36" (288.54mm) |
0.50" (12.70mm) | 78th Driest | Driest since: 1939 | 2013 |
| 50th Wettest | Wettest since: 1938 | 1993 | ||||
|
Jun–Sep 1940 4-Month |
15.53" (394.46mm) | 16.00" (406.40mm) |
-0.47" (-11.94mm) | 64th Driest | Driest since: 1939 | 2012 |
| 64th Wettest | Wettest since: 1938 | 1993 | ||||
|
May–Sep 1940 5-Month |
17.55" (445.77mm) | 20.04" (509.02mm) |
-2.49" (-63.25mm) | 33rd Driest | Driest since: 1939 | 1976 |
| 95th Wettest | Wettest since: 1938 | 1993 | ||||
|
Apr–Sep 1940 6-Month |
20.70" (525.78mm) | 22.99" (583.95mm) |
-2.29" (-58.17mm) | 34th Driest | Driest since: 1939 | 1988 |
| 94th Wettest | Wettest since: 1938 | 1993 | ||||
|
Mar–Sep 1940 7-Month |
22.40" (568.96mm) | 24.94" (633.48mm) |
-2.54" (-64.52mm) | 36th Driest | Driest since: 1939 | 1988 |
| 92nd Wettest | Wettest since: 1938 | 1993 | ||||
|
Feb–Sep 1940 8-Month |
23.51" (597.15mm) | 25.96" (659.38mm) |
-2.45" (-62.23mm) | 37th Driest | Driest since: 1939 | 1988 |
| 91st Wettest | Wettest since: 1938 | 1993 | ||||
| Ties: 1904 | ||||||
|
Jan–Sep 1940 9-Month |
24.32" (617.73mm) | 26.93" (684.02mm) |
-2.61" (-66.29mm) | 37th Driest | Driest since: 1939 | 1988 |
| 91st Wettest | Wettest since: 1938 | 1993 | ||||
|
Dec 1939–Sep 1940 10-Month |
24.92" (632.97mm) | 28.04" (712.22mm) |
-3.12" (-79.25mm) | 29th Driest | Driest since: 1939 | 1988 |
| 98th Wettest | Wettest since: 1938 | 1993 | ||||
| Ties: 1922 | ||||||
|
Nov 1939–Sep 1940 11-Month |
25.41" (645.41mm) | 29.78" (756.41mm) |
-4.37" (-111.00mm) | 17th Driest | Driest since: 1939 | 1934 |
| 110th Wettest | Wettest since: 1938 | 1993 | ||||
|
Oct 1939–Sep 1940 12-Month |
26.89" (683.01mm) | 32.09" (815.09mm) |
-5.20" (-132.08mm) | 17th Driest | Driest since: 1939 | 1934 |
| 110th Wettest | Wettest since: 1938 | 1993 | ||||
|
Apr 1939–Sep 1940 18-Month |
44.56" (1,131.82mm) | 55.13" (1,400.30mm) |
-10.57" (-268.48mm) | 5th Driest | Driest since: 1934 | 1934 |
| 122nd Wettest | Wettest since: 1939 | 1993 | ||||
|
Oct 1938–Sep 1940 24-Month |
53.06" (1,347.72mm) | 64.26" (1,632.20mm) |
-11.20" (-284.48mm) | 5th Driest | Driest since: 1934 | 1956 |
| 121st Wettest | Wettest since: 1939 | 1993 | ||||
|
Oct 1937–Sep 1940 36-Month |
88.68" (2,252.47mm) | 96.36" (2,447.54mm) |
-7.68" (-195.07mm) | 18th Driest | Driest since: 1936 | 1957 |
| 107th Wettest | Wettest since: 1939 | 2010 | ||||
|
Oct 1936–Sep 1940 48-Month |
116.41" (2,956.81mm) | 128.36" (3,260.34mm) |
-11.95" (-303.53mm) | 10th Driest | Driest since: 1937 | 1958 |
| 114th Wettest | Wettest since: 1939 | 2010 | ||||
|
Oct 1935–Sep 1940 60-Month |
144.48" (3,669.79mm) | 160.34" (4,072.64mm) |
-15.86" (-402.85mm) | 7th Driest | Driest since: 1937 | 1957 |
| 116th Wettest | Wettest since: 1939 | 2010 | ||||
Citing This Page
- NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2022, retrieved on July 6, 2022 from https://www.ncei.noaa.gov/cag/