| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.51 | 3.27 | 0.24 |
| Feb | 3.03 | 3.08 | -0.05 |
| Mar | 3.93 | 3.72 | 0.21 |
| Apr | 3.84 | 3.54 | 0.30 |
| May | 3.83 | 3.64 | 0.19 |
| Jun | 4.14 | 3.79 | 0.35 |
| Jul | 4.63 | 3.88 | 0.75 |
| Aug | 3.99 | 3.61 | 0.38 |
| Sep | 3.61 | 3.12 | 0.49 |
| Oct | 2.90 | 2.32 | 0.58 |
| Nov | 3.22 | 2.74 | 0.48 |
| Dec | 3.78 | 3.42 | 0.36 |
44.41 | 40.13 | 4.28 |