| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.60 | 0.58 | 0.02 |
| Feb | 0.72 | 0.71 | 0.01 |
| Mar | 1.44 | 1.40 | 0.04 |
| Apr | 2.63 | 2.75 | -0.12 |
| May | 3.47 | 3.40 | 0.07 |
| Jun | 4.25 | 4.26 | -0.01 |
| Jul | 3.44 | 3.41 | 0.03 |
| Aug | 3.45 | 3.29 | 0.16 |
| Sep | 3.01 | 2.88 | 0.13 |
| Oct | 2.31 | 2.18 | 0.13 |
| Nov | 1.15 | 1.13 | 0.02 |
| Dec | 0.79 | 0.87 | -0.08 |
27.26 | 26.86 | 0.40 |