| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.54 | 3.33 | 0.21 |
| Feb | 2.90 | 2.58 | 0.32 |
| Mar | 3.78 | 3.62 | 0.16 |
| Apr | 3.67 | 3.28 | 0.39 |
| May | 4.46 | 4.59 | -0.13 |
| Jun | 4.67 | 4.50 | 0.17 |
| Jul | 3.99 | 3.86 | 0.13 |
| Aug | 4.17 | 3.70 | 0.47 |
| Sep | 4.81 | 4.52 | 0.29 |
| Oct | 3.71 | 3.36 | 0.35 |
| Nov | 3.63 | 3.36 | 0.27 |
| Dec | 3.88 | 3.80 | 0.08 |
47.21 | 44.50 | 2.71 |