| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.62 | 0.64 | -0.02 |
| Feb | 0.73 | 0.75 | -0.02 |
| Mar | 1.51 | 1.42 | 0.09 |
| Apr | 2.63 | 2.66 | -0.03 |
| May | 3.51 | 3.58 | -0.07 |
| Jun | 4.37 | 4.21 | 0.16 |
| Jul | 3.59 | 3.57 | 0.02 |
| Aug | 3.62 | 3.52 | 0.10 |
| Sep | 3.08 | 2.90 | 0.18 |
| Oct | 2.27 | 2.13 | 0.14 |
| Nov | 1.24 | 1.20 | 0.04 |
| Dec | 0.82 | 0.85 | -0.03 |
27.99 | 27.43 | 0.56 |