| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.43 | 3.45 | -0.02 |
| Feb | 2.73 | 2.81 | -0.08 |
| Mar | 4.13 | 4.10 | 0.03 |
| Apr | 3.82 | 3.73 | 0.09 |
| May | 4.04 | 3.95 | 0.09 |
| Jun | 4.29 | 4.20 | 0.09 |
| Jul | 4.75 | 4.74 | 0.01 |
| Aug | 4.72 | 4.69 | 0.03 |
| Sep | 4.50 | 4.52 | -0.02 |
| Oct | 4.15 | 4.23 | -0.08 |
| Nov | 3.31 | 3.28 | 0.03 |
| Dec | 4.33 | 4.37 | -0.04 |
48.20 | 48.07 | 0.13 |