# Counties in Illinois by annual precipitation, 2025

All 102 values come from NOAA National Centers for Environmental Information for 2025, so the places are comparable.

- Indicator id: `precipitation_annual`
- Unit: inches
- Definition: Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- Citation: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/annual-precipitation/illinois-counties

| Rank | Place | inches |
|---:|---|---:|
| 1 | Massac County | 53.59 |
| 2 | Alexander County | 51.83 |
| 3 | Pulaski County | 51.5 |
| 4 | Pope County | 50.67 |
| 5 | Hardin County | 49.73 |
| 6 | Lawrence County | 47.52 |
| 7 | Johnson County | 47.04 |
| 8 | Richland County | 46.12 |
| 9 | Wabash County | 46.1 |
| 10 | Clay County | 45.93 |
| 11 | Union County | 45.19 |
| 12 | Jasper County | 45.15 |
| 13 | Edwards County | 44.77 |
| 14 | Marion County | 44.74 |
| 15 | Wayne County | 43.05 |
| 16 | Crawford County | 42.6 |
| 17 | Gallatin County | 41.91 |
| 18 | Saline County | 41.55 |
| 19 | White County | 41.11 |
| 20 | Williamson County | 40.43 |
| 21 | Jackson County | 40.34 |
| 22 | Clinton County | 40.27 |
| 22 | Effingham County | 40.27 |
| 24 | Hamilton County | 39.47 |
| 25 | Washington County | 38.74 |
| 26 | Jefferson County | 38.15 |
| 27 | Fayette County | 37.58 |
| 28 | Madison County | 36.97 |
| 29 | Randolph County | 36.71 |
| 30 | Clark County | 36.44 |
| 31 | Franklin County | 35.98 |
| 32 | Cumberland County | 35.9 |
| 33 | Bond County | 35.84 |
| 34 | St. Clair County | 35.83 |
| 35 | Perry County | 35.39 |
| 36 | Monroe County | 34.55 |
| 37 | Jersey County | 33.35 |
| 38 | Rock Island County | 33.23 |
| 39 | Lee County | 33.09 |
| 40 | Boone County | 32.93 |
| 41 | Macoupin County | 32.74 |
| 42 | Mercer County | 32.41 |
| 43 | Kankakee County | 32.33 |
| 44 | Shelby County | 32.22 |
| 45 | McHenry County | 32.18 |
| 46 | Carroll County | 31.84 |
| 47 | Montgomery County | 31.82 |
| 48 | Hancock County | 31.81 |
| 49 | Henry County | 31.46 |
| 50 | Jo Daviess County | 31.38 |
| 51 | Coles County | 31.21 |
| 52 | Bureau County | 31.07 |
| 53 | Christian County | 30.87 |
| 54 | Winnebago County | 30.86 |
| 55 | Ogle County | 30.85 |
| 56 | Whiteside County | 30.84 |
| 57 | Grundy County | 30.83 |
| 58 | DeKalb County | 30.81 |
| 59 | DuPage County | 30.66 |
| 60 | Stark County | 30.52 |
| 61 | Calhoun County | 30.5 |
| 61 | Kane County | 30.5 |
| 63 | Iroquois County | 30.46 |
| 64 | Will County | 30.36 |
| 65 | Livingston County | 30.28 |
| 66 | Cook County | 30.21 |
| 67 | Marshall County | 30.2 |
| 68 | Kendall County | 30.19 |
| 69 | Knox County | 30.07 |
| 70 | LaSalle County | 29.94 |
| 71 | Putnam County | 29.83 |
| 72 | Henderson County | 29.71 |
| 73 | Stephenson County | 29.62 |
| 74 | Brown County | 29.55 |
| 75 | Edgar County | 29.54 |
| 76 | Warren County | 29.46 |
| 77 | Schuyler County | 29.45 |
| 78 | Adams County | 29.43 |
| 79 | Macon County | 29.42 |
| 80 | Logan County | 29.3 |
| 81 | Woodford County | 29.21 |
| 82 | Greene County | 29.04 |
| 83 | Moultrie County | 28.96 |
| 84 | McDonough County | 28.93 |
| 85 | Pike County | 28.91 |
| 86 | Douglas County | 28.47 |
| 87 | Lake County | 28.44 |
| 88 | Ford County | 27.52 |
| 88 | Scott County | 27.52 |
| 90 | De Witt County | 27.31 |
| 91 | Morgan County | 27.27 |
| 92 | McLean County | 27.24 |
| 93 | Cass County | 27.23 |
| 94 | Tazewell County | 27.16 |
| 95 | Sangamon County | 27.03 |
| 96 | Vermilion County | 26.98 |
| 97 | Mason County | 26.96 |
| 98 | Peoria County | 26.95 |
| 99 | Piatt County | 26.75 |
| 100 | Fulton County | 26.43 |
| 101 | Menard County | 26.26 |
| 102 | Champaign County | 24.2 |