| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.36 | 4.35 | 0.01 |
| Feb | 4.32 | 4.27 | 0.05 |
| Mar | 4.68 | 4.64 | 0.04 |
| Apr | 3.56 | 3.61 | -0.05 |
| May | 3.47 | 3.45 | 0.02 |
| Jun | 4.49 | 4.38 | 0.11 |
| Jul | 3.94 | 4.03 | -0.09 |
| Aug | 4.48 | 4.51 | -0.03 |
| Sep | 3.74 | 3.82 | -0.08 |
| Oct | 3.30 | 3.41 | -0.11 |
| Nov | 3.71 | 3.82 | -0.11 |
| Dec | 4.50 | 4.70 | -0.20 |
48.55 | 48.99 | -0.44 |