| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 1.27 | 1.25 | 0.02 |
| Feb | 1.12 | 1.07 | 0.05 |
| Mar | 1.69 | 1.61 | 0.08 |
| Apr | 2.83 | 2.80 | 0.03 |
| May | 3.54 | 3.46 | 0.08 |
| Jun | 4.20 | 4.11 | 0.09 |
| Jul | 4.10 | 4.05 | 0.05 |
| Aug | 3.42 | 3.34 | 0.08 |
| Sep | 3.67 | 3.57 | 0.10 |
| Oct | 3.54 | 3.43 | 0.11 |
| Nov | 2.00 | 1.90 | 0.10 |
| Dec | 1.63 | 1.56 | 0.07 |
33.01 | 32.15 | 0.86 |