| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.56 | 3.54 | 0.02 |
| Feb | 2.99 | 2.97 | 0.02 |
| Mar | 4.07 | 3.98 | 0.09 |
| Apr | 3.63 | 3.64 | -0.01 |
| May | 3.79 | 3.65 | 0.14 |
| Jun | 4.42 | 4.54 | -0.12 |
| Jul | 4.85 | 4.86 | -0.01 |
| Aug | 4.71 | 4.73 | -0.02 |
| Sep | 4.94 | 5.31 | -0.37 |
| Oct | 3.53 | 3.67 | -0.14 |
| Nov | 3.40 | 3.36 | 0.04 |
| Dec | 3.51 | 3.47 | 0.04 |
47.40 | 47.72 | -0.32 |