Running Rainfall Averages
| Running Average | ||
| Ending Year | 30 Year | 10 Year |
| 1860 | 22.24 | |
| 1870 | 25.09 | |
| 1880 | 23.88 | 24.32 |
| 1890 | 24.67 | 24.60 |
| 1900 | 22.81 | 19.51 |
| 1910 | 21.61 | 20.72 |
| 1920 | 20.35 | 20.82 |
| 1930 | 20.39 | 19.63 |
| 1940 | 20.31 | 20.48 |
| 1950 | 20.50 | 21.40 |
| 1960 | 20.79 | 20.47 |
| 1970 | 20.66 | 20.09 |
| 1980 | 19.86 | 19.01 |
| 1990 | 20.52 | 22.46 |
| 2000 | 22.28 | 25.38 |
| 2010 | 23.87 | 23.76 |
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