| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 2.84 | 3.18 | -0.34 |
| Feb | 2.48 | 2.69 | -0.21 |
| Mar | 3.27 | 3.43 | -0.16 |
| Apr | 3.78 | 3.88 | -0.10 |
| May | 3.80 | 3.64 | 0.16 |
| Jun | 4.71 | 4.44 | 0.27 |
| Jul | 4.41 | 4.46 | -0.05 |
| Aug | 4.26 | 4.15 | 0.11 |
| Sep | 4.05 | 3.82 | 0.23 |
| Oct | 4.22 | 4.02 | 0.20 |
| Nov | 3.30 | 3.27 | 0.03 |
| Dec | 3.41 | 3.48 | -0.07 |
44.53 | 44.46 | 0.07 |