| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.89 | 4.10 | -0.21 |
| Feb | 3.48 | 3.52 | -0.04 |
| Mar | 4.78 | 5.05 | -0.27 |
| Apr | 4.38 | 4.63 | -0.25 |
| May | 3.45 | 3.41 | 0.04 |
| Jun | 3.99 | 4.04 | -0.05 |
| Jul | 3.24 | 3.20 | 0.04 |
| Aug | 3.89 | 3.77 | 0.12 |
| Sep | 4.11 | 4.06 | 0.05 |
| Oct | 4.58 | 4.71 | -0.13 |
| Nov | 4.20 | 4.22 | -0.02 |
| Dec | 4.76 | 4.95 | -0.19 |
48.75 | 49.66 | -0.91 |