| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.58 | 3.87 | -0.29 |
| Feb | 3.16 | 3.47 | -0.31 |
| Mar | 4.19 | 4.56 | -0.37 |
| Apr | 4.31 | 4.70 | -0.39 |
| May | 3.92 | 4.08 | -0.16 |
| Jun | 4.40 | 4.32 | 0.08 |
| Jul | 4.00 | 4.09 | -0.09 |
| Aug | 4.12 | 4.26 | -0.14 |
| Sep | 4.54 | 4.55 | -0.01 |
| Oct | 4.73 | 5.09 | -0.36 |
| Nov | 3.94 | 4.03 | -0.09 |
| Dec | 4.36 | 4.66 | -0.30 |
49.25 | 51.68 | -2.43 |