| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 8.34 | 8.05 | 0.29 |
| Feb | 7.79 | 7.30 | 0.49 |
| Mar | 7.50 | 7.10 | 0.40 |
| Apr | 4.20 | 3.99 | 0.21 |
| May | 2.63 | 2.61 | 0.02 |
| Jun | 0.67 | 0.65 | 0.02 |
| Jul | 0.03 | 0.04 | -0.01 |
| Aug | 0.06 | 0.07 | -0.01 |
| Sep | 0.40 | 0.34 | 0.06 |
| Oct | 2.43 | 2.33 | 0.10 |
| Nov | 4.57 | 4.29 | 0.28 |
| Dec | 8.16 | 7.67 | 0.49 |
46.78 | 44.44 | 2.34 |