| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.47 | 4.02 | 0.45 |
| Feb | 4.41 | 4.01 | 0.40 |
| Mar | 3.43 | 3.08 | 0.35 |
| Apr | 1.60 | 1.45 | 0.15 |
| May | 0.68 | 0.55 | 0.13 |
| Jun | 0.16 | 0.15 | 0.01 |
| Jul | 0.01 | 0.01 | 0.00 |
| Aug | 0.03 | 0.05 | -0.02 |
| Sep | 0.09 | 0.08 | 0.01 |
| Oct | 0.98 | 0.89 | 0.09 |
| Nov | 2.24 | 1.89 | 0.35 |
| Dec | 4.47 | 4.21 | 0.26 |
22.57 | 20.39 | 2.18 |