| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.66 | 0.65 | 0.01 |
| Feb | 0.66 | 0.68 | -0.02 |
| Mar | 1.21 | 1.13 | 0.08 |
| Apr | 2.18 | 2.11 | 0.07 |
| May | 3.30 | 3.45 | -0.15 |
| Jun | 4.27 | 4.24 | 0.03 |
| Jul | 4.27 | 4.21 | 0.06 |
| Aug | 3.35 | 2.98 | 0.37 |
| Sep | 2.98 | 2.83 | 0.15 |
| Oct | 2.63 | 2.60 | 0.03 |
| Nov | 1.16 | 1.05 | 0.11 |
| Dec | 0.84 | 0.87 | -0.03 |
27.51 | 26.80 | 0.71 |