| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.61 | 3.49 | 0.12 |
| Feb | 3.19 | 3.10 | 0.09 |
| Mar | 3.96 | 3.87 | 0.09 |
| Apr | 3.89 | 3.86 | 0.03 |
| May | 3.63 | 3.66 | -0.03 |
| Jun | 4.47 | 4.22 | 0.25 |
| Jul | 4.23 | 4.06 | 0.17 |
| Aug | 4.36 | 4.35 | 0.01 |
| Sep | 4.26 | 4.21 | 0.05 |
| Oct | 4.80 | 4.72 | 0.08 |
| Nov | 3.72 | 3.64 | 0.08 |
| Dec | 4.33 | 4.19 | 0.14 |
48.45 | 47.37 | 1.08 |