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 1977
View Period (Months):All1234567891011121824364860
Download:
| Period | Value | 1901-2000 Mean |
Anomaly | Rank (1895-2021) |
Wettest/Driest Since |
Record |
|---|---|---|---|---|---|---|
|
September 1977 1-Month |
4.69" (119.13mm) | 3.67" (93.22mm) |
1.02" (25.91mm) | 96th Driest | Driest since: 1976 | 1939 |
| 32nd Wettest | Wettest since: 1973 | 1965 | ||||
|
Aug–Sep 1977 2-Month |
12.89" (327.41mm) | 7.51" (190.75mm) |
5.38" (136.66mm) | 124th Driest | Driest since: 1976 | 1976 |
| 4th Wettest | Wettest since: 1965 | 2018 | ||||
|
Jul–Sep 1977 3-Month |
16.88" (428.75mm) | 11.36" (288.54mm) |
5.52" (140.21mm) | 119th Driest | Driest since: 1976 | 2013 |
| 9th Wettest | Wettest since: 1965 | 1993 | ||||
|
Jun–Sep 1977 4-Month |
19.55" (496.57mm) | 16.00" (406.40mm) |
3.55" (90.17mm) | 111th Driest | Driest since: 1976 | 2012 |
| 17th Wettest | Wettest since: 1965 | 1993 | ||||
|
May–Sep 1977 5-Month |
22.32" (566.93mm) | 20.04" (509.02mm) |
2.28" (57.91mm) | 96th Driest | Driest since: 1976 | 1976 |
| 32nd Wettest | Wettest since: 1973 | 1993 | ||||
|
Apr–Sep 1977 6-Month |
24.85" (631.19mm) | 22.99" (583.95mm) |
1.86" (47.24mm) | 89th Driest | Driest since: 1976 | 1988 |
| 39th Wettest | Wettest since: 1973 | 1993 | ||||
|
Mar–Sep 1977 7-Month |
28.75" (730.25mm) | 24.94" (633.48mm) |
3.81" (96.77mm) | 103rd Driest | Driest since: 1976 | 1988 |
| 25th Wettest | Wettest since: 1973 | 1993 | ||||
|
Feb–Sep 1977 8-Month |
29.26" (743.20mm) | 25.96" (659.38mm) |
3.30" (83.82mm) | 99th Driest | Driest since: 1976 | 1988 |
| 29th Wettest | Wettest since: 1973 | 1993 | ||||
|
Jan–Sep 1977 9-Month |
29.76" (755.90mm) | 26.93" (684.02mm) |
2.83" (71.88mm) | 96th Driest | Driest since: 1976 | 1988 |
| 32nd Wettest | Wettest since: 1973 | 1993 | ||||
|
Dec 1976–Sep 1977 10-Month |
30.07" (763.78mm) | 28.04" (712.22mm) |
2.03" (51.56mm) | 83rd Driest | Driest since: 1976 | 1988 |
| 44th Wettest | Wettest since: 1973 | 1993 | ||||
|
Nov 1976–Sep 1977 11-Month |
30.17" (766.32mm) | 29.78" (756.41mm) |
0.39" (9.91mm) | 68th Driest | Driest since: 1976 | 1934 |
| 59th Wettest | Wettest since: 1974 | 1993 | ||||
|
Oct 1976–Sep 1977 12-Month |
31.70" (805.18mm) | 32.09" (815.09mm) |
-0.39" (-9.91mm) | 57th Driest | Driest since: 1976 | 1934 |
| 70th Wettest | Wettest since: 1974 | 1993 | ||||
| Ties: 2020 | ||||||
|
Apr 1976–Sep 1977 18-Month |
48.24" (1,225.30mm) | 55.13" (1,400.30mm) |
-6.89" (-175.00mm) | 16th Driest | Driest since: 1976 | 1934 |
| 111th Wettest | Wettest since: 1975 | 1993 | ||||
|
Oct 1975–Sep 1977 24-Month |
57.90" (1,470.66mm) | 64.26" (1,632.20mm) |
-6.36" (-161.54mm) | 21st Driest | Driest since: 1976 | 1956 |
| 105th Wettest | Wettest since: 1975 | 1993 | ||||
|
Oct 1974–Sep 1977 36-Month |
88.86" (2,257.04mm) | 96.36" (2,447.54mm) |
-7.50" (-190.50mm) | 19th Driest | Driest since: 1968 | 1957 |
| 106th Wettest | Wettest since: 1976 | 2010 | ||||
|
Oct 1973–Sep 1977 48-Month |
122.26" (3,105.40mm) | 128.36" (3,260.34mm) |
-6.10" (-154.94mm) | 31st Driest | Driest since: 1969 | 1958 |
| 93rd Wettest | Wettest since: 1976 | 2010 | ||||
|
Oct 1972–Sep 1977 60-Month |
165.44" (4,202.18mm) | 160.34" (4,072.64mm) |
5.10" (129.54mm) | 75th Driest | Driest since: 1972 | 1957 |
| 48th Wettest | Wettest since: 1976 | 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/