| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.75 | -0.18 |
| Feb | 2.99 | 3.12 | -0.13 |
| Mar | 4.32 | 4.25 | 0.07 |
| Apr | 3.76 | 3.83 | -0.07 |
| May | 3.91 | 3.74 | 0.17 |
| Jun | 4.08 | 4.08 | 0.00 |
| Jul | 4.22 | 4.15 | 0.07 |
| Aug | 4.61 | 4.81 | -0.20 |
| Sep | 3.90 | 3.84 | 0.06 |
| Oct | 4.05 | 4.19 | -0.14 |
| Nov | 3.33 | 3.39 | -0.06 |
| Dec | 4.30 | 4.58 | -0.28 |
47.04 | 47.73 | -0.69 |