| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.31 | 3.50 | -0.19 |
| Feb | 2.98 | 3.00 | -0.02 |
| Mar | 3.58 | 3.59 | -0.01 |
| Apr | 3.84 | 3.78 | 0.06 |
| May | 3.78 | 3.82 | -0.04 |
| Jun | 4.47 | 4.48 | -0.01 |
| Jul | 4.12 | 4.18 | -0.06 |
| Aug | 4.31 | 4.20 | 0.11 |
| Sep | 4.50 | 4.46 | 0.04 |
| Oct | 4.85 | 4.56 | 0.29 |
| Nov | 3.54 | 3.51 | 0.03 |
| Dec | 4.33 | 4.25 | 0.08 |
47.61 | 47.33 | 0.28 |