| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.44 | 3.57 | -0.13 |
| Feb | 2.70 | 2.86 | -0.16 |
| Mar | 3.95 | 4.21 | -0.26 |
| Apr | 3.71 | 3.73 | -0.02 |
| May | 4.06 | 4.11 | -0.05 |
| Jun | 4.21 | 4.30 | -0.09 |
| Jul | 5.09 | 5.00 | 0.09 |
| Aug | 4.60 | 4.55 | 0.05 |
| Sep | 4.46 | 4.40 | 0.06 |
| Oct | 4.09 | 4.22 | -0.13 |
| Nov | 3.33 | 3.35 | -0.02 |
| Dec | 4.26 | 4.41 | -0.15 |
47.90 | 48.71 | -0.81 |