| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.92 | 4.13 | -0.21 |
| Feb | 3.45 | 3.65 | -0.20 |
| Mar | 4.25 | 4.36 | -0.11 |
| Apr | 3.64 | 3.74 | -0.10 |
| May | 3.56 | 3.36 | 0.20 |
| Jun | 4.17 | 3.90 | 0.27 |
| Jul | 3.55 | 3.56 | -0.01 |
| Aug | 4.13 | 4.01 | 0.12 |
| Sep | 3.60 | 3.57 | 0.03 |
| Oct | 3.29 | 3.30 | -0.01 |
| Nov | 3.55 | 3.53 | 0.02 |
| Dec | 4.21 | 4.17 | 0.04 |
45.32 | 45.28 | 0.04 |