| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.52 | 3.61 | -0.09 |
| Feb | 2.86 | 2.87 | -0.01 |
| Mar | 4.16 | 4.14 | 0.02 |
| Apr | 3.69 | 3.65 | 0.04 |
| May | 3.67 | 3.72 | -0.05 |
| Jun | 4.41 | 4.34 | 0.07 |
| Jul | 4.73 | 4.75 | -0.02 |
| Aug | 4.68 | 4.56 | 0.12 |
| Sep | 4.85 | 5.35 | -0.50 |
| Oct | 3.50 | 3.51 | -0.01 |
| Nov | 3.40 | 3.37 | 0.03 |
| Dec | 3.56 | 3.63 | -0.07 |
47.03 | 47.50 | -0.47 |