| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.88 | 4.09 | -0.21 |
| Feb | 3.29 | 3.69 | -0.40 |
| Mar | 4.34 | 4.68 | -0.34 |
| Apr | 4.06 | 4.13 | -0.07 |
| May | 3.15 | 3.31 | -0.16 |
| Jun | 3.34 | 3.39 | -0.05 |
| Jul | 2.51 | 2.76 | -0.25 |
| Aug | 3.42 | 3.36 | 0.06 |
| Sep | 3.80 | 3.93 | -0.13 |
| Oct | 4.39 | 4.52 | -0.13 |
| Nov | 4.04 | 4.06 | -0.02 |
| Dec | 4.70 | 4.98 | -0.28 |
44.92 | 46.90 | -1.98 |