| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.43 | 0.05 |
| Feb | 2.78 | 2.75 | 0.03 |
| Mar | 3.92 | 3.90 | 0.02 |
| Apr | 3.45 | 3.41 | 0.04 |
| May | 4.21 | 4.12 | 0.09 |
| Jun | 4.13 | 4.04 | 0.09 |
| Jul | 4.42 | 4.38 | 0.04 |
| Aug | 4.35 | 4.37 | -0.02 |
| Sep | 4.51 | 4.46 | 0.05 |
| Oct | 3.66 | 3.59 | 0.07 |
| Nov | 3.27 | 3.25 | 0.02 |
| Dec | 3.70 | 3.68 | 0.02 |
45.88 | 45.38 | 0.50 |