| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.46 | 3.33 | 0.13 |
| Feb | 3.11 | 2.98 | 0.13 |
| Mar | 4.13 | 4.06 | 0.07 |
| Apr | 3.24 | 3.43 | -0.19 |
| May | 3.40 | 3.39 | 0.01 |
| Jun | 3.70 | 3.60 | 0.10 |
| Jul | 4.25 | 3.85 | 0.40 |
| Aug | 4.21 | 4.19 | 0.02 |
| Sep | 4.27 | 4.38 | -0.11 |
| Oct | 3.88 | 4.27 | -0.39 |
| Nov | 3.12 | 3.09 | 0.03 |
| Dec | 3.66 | 3.85 | -0.19 |
44.43 | 44.42 | 0.01 |