| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.65 | -0.01 |
| Feb | 0.82 | 0.85 | -0.03 |
| Mar | 1.44 | 1.42 | 0.02 |
| Apr | 2.51 | 2.45 | 0.06 |
| May | 4.17 | 4.25 | -0.08 |
| Jun | 3.69 | 3.80 | -0.11 |
| Jul | 4.46 | 4.50 | -0.04 |
| Aug | 3.54 | 3.41 | 0.13 |
| Sep | 2.51 | 2.54 | -0.03 |
| Oct | 1.93 | 1.92 | 0.01 |
| Nov | 1.17 | 1.21 | -0.04 |
| Dec | 0.97 | 1.00 | -0.03 |
27.85 | 28.00 | -0.15 |