| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 8.65 | 9.05 | -0.40 |
| Feb | 7.76 | 7.63 | 0.13 |
| Mar | 7.21 | 6.99 | 0.22 |
| Apr | 4.09 | 3.92 | 0.17 |
| May | 1.94 | 1.94 | 0.00 |
| Jun | 0.63 | 0.62 | 0.01 |
| Jul | 0.11 | 0.15 | -0.04 |
| Aug | 0.14 | 0.10 | 0.04 |
| Sep | 0.47 | 0.46 | 0.01 |
| Oct | 2.47 | 2.44 | 0.03 |
| Nov | 5.49 | 5.14 | 0.35 |
| Dec | 9.82 | 9.61 | 0.21 |
48.78 | 48.05 | 0.73 |