| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.46 | 4.39 | 0.07 |
| Feb | 4.16 | 4.24 | -0.08 |
| Mar | 4.46 | 4.44 | 0.02 |
| Apr | 3.56 | 3.66 | -0.10 |
| May | 2.82 | 2.85 | -0.03 |
| Jun | 4.42 | 4.58 | -0.16 |
| Jul | 4.70 | 4.68 | 0.02 |
| Aug | 4.80 | 4.64 | 0.16 |
| Sep | 3.70 | 3.75 | -0.05 |
| Oct | 2.72 | 2.76 | -0.04 |
| Nov | 2.99 | 3.02 | -0.03 |
| Dec | 4.59 | 4.41 | 0.18 |
47.38 | 47.42 | -0.04 |