| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.52 | 4.55 | -0.03 |
| Feb | 4.67 | 4.59 | 0.08 |
| Mar | 4.91 | 4.90 | 0.01 |
| Apr | 3.84 | 3.90 | -0.06 |
| May | 3.04 | 3.16 | -0.12 |
| Jun | 4.43 | 4.38 | 0.05 |
| Jul | 4.46 | 4.50 | -0.04 |
| Aug | 4.40 | 4.38 | 0.02 |
| Sep | 3.92 | 3.90 | 0.02 |
| Oct | 3.32 | 3.35 | -0.03 |
| Nov | 3.69 | 3.72 | -0.03 |
| Dec | 4.65 | 4.68 | -0.03 |
49.85 | 50.01 | -0.16 |