Average Precipitation for Iowa in January
The tables below give monthly averages for rainfall plus snowfall during January at cities, towns and lakes in Iowa.
Each place has a total for the amount of precipitation it usually receives this month. Most sites also have information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.
You can jump to a separate table for each region of the state: Eastern, Central and Western Iowa.
Eastern Iowa
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 8 | Burlington | 1.2 | 31 |
| 9 | Cedar Rapids | 1.1 | 28 |
| 10 | Clinton | 1.4 | 36 |
| 7 | Cresco | 1.0 | 25 |
| – | Davenport | 1.2 | 30 |
| 7 | Decorah | 0.9 | 23 |
| 8 | Dubuque | 1.1 | 29 |
| 7 | Iowa City | 1.1 | 28 |
| 7 | Keokuk | 1.4 | 35 |
| 7 | Waterloo | 0.8 | 20 |
Central Iowa
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 5 | Ames | 0.7 | 18 |
| 8 | Des Moines | 1.0 | 26 |
| 6 | Fort Dodge | 0.9 | 23 |
| 6 | Marshalltown | 0.9 | 22 |
| 8 | Mason City | 0.8 | 21 |
| 7 | Ottumwa | 0.9 | 23 |
| 5 | Rathbun Lake Dam | 0.9 | 22 |
Western Iowa
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 6 | Carroll | 0.9 | 23 |
| 5 | Lake Park | 0.7 | 19 |
| 6 | Milford | 0.6 | 16 |
| 4 | Onawa | 0.6 | 15 |
| 5 | Shenandoah | 0.9 | 23 |
| 6 | Sioux City | 0.6 | 16 |
| 3 | Storm Lake | 0.6 | 14 |
Reference
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.