| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.56 | 0.57 | -0.01 |
| Feb | 0.69 | 0.71 | -0.02 |
| Mar | 1.42 | 1.43 | -0.01 |
| Apr | 2.63 | 2.75 | -0.12 |
| May | 4.61 | 4.64 | -0.03 |
| Jun | 3.98 | 4.02 | -0.04 |
| Jul | 3.50 | 3.45 | 0.05 |
| Aug | 3.26 | 3.37 | -0.11 |
| Sep | 2.16 | 2.13 | 0.03 |
| Oct | 2.15 | 2.10 | 0.05 |
| Nov | 1.20 | 1.17 | 0.03 |
| Dec | 0.85 | 0.87 | -0.02 |
27.01 | 27.21 | -0.20 |