| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.08 | 4.09 | -0.01 |
| Feb | 4.50 | 4.40 | 0.10 |
| Mar | 4.70 | 4.74 | -0.04 |
| Apr | 4.99 | 4.88 | 0.11 |
| May | 5.03 | 5.14 | -0.11 |
| Jun | 4.21 | 4.20 | 0.01 |
| Jul | 4.51 | 4.48 | 0.03 |
| Aug | 3.92 | 3.91 | 0.01 |
| Sep | 3.70 | 3.74 | -0.04 |
| Oct | 3.55 | 3.43 | 0.12 |
| Nov | 3.69 | 3.61 | 0.08 |
| Dec | 4.68 | 4.74 | -0.06 |
51.56 | 51.36 | 0.20 |