| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.56 | 3.55 | 0.01 |
| Feb | 3.21 | 3.18 | 0.03 |
| Mar | 3.76 | 3.71 | 0.05 |
| Apr | 3.53 | 3.43 | 0.10 |
| May | 4.17 | 4.02 | 0.15 |
| Jun | 5.06 | 4.91 | 0.15 |
| Jul | 5.85 | 5.75 | 0.10 |
| Aug | 5.50 | 5.83 | -0.33 |
| Sep | 6.68 | 6.46 | 0.22 |
| Oct | 3.29 | 3.39 | -0.10 |
| Nov | 3.35 | 3.26 | 0.09 |
| Dec | 3.51 | 3.42 | 0.09 |
51.47 | 50.91 | 0.56 |