| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.25 | 4.22 | 0.03 |
| Feb | 4.60 | 4.53 | 0.07 |
| Mar | 4.99 | 4.83 | 0.16 |
| Apr | 4.87 | 4.87 | 0.00 |
| May | 4.90 | 5.08 | -0.18 |
| Jun | 4.39 | 4.43 | -0.04 |
| Jul | 4.55 | 4.61 | -0.06 |
| Aug | 3.81 | 3.70 | 0.11 |
| Sep | 3.92 | 3.82 | 0.10 |
| Oct | 3.51 | 3.46 | 0.05 |
| Nov | 3.69 | 3.76 | -0.07 |
| Dec | 4.82 | 4.91 | -0.09 |
52.30 | 52.22 | 0.08 |