| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.70 | 4.20 | -0.50 |
| Feb | 3.07 | 3.61 | -0.54 |
| Mar | 4.21 | 4.72 | -0.51 |
| Apr | 4.24 | 4.87 | -0.63 |
| May | 3.53 | 3.88 | -0.35 |
| Jun | 4.29 | 4.48 | -0.19 |
| Jul | 3.51 | 3.75 | -0.24 |
| Aug | 3.95 | 4.43 | -0.48 |
| Sep | 4.15 | 4.73 | -0.58 |
| Oct | 4.57 | 4.85 | -0.28 |
| Nov | 3.99 | 4.20 | -0.21 |
| Dec | 4.39 | 5.06 | -0.67 |
47.60 | 52.78 | -5.18 |