| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.64 | 0.64 | 0.00 |
| Feb | 0.59 | 0.63 | -0.04 |
| Mar | 1.18 | 1.18 | 0.00 |
| Apr | 2.17 | 2.20 | -0.03 |
| May | 3.30 | 3.24 | 0.06 |
| Jun | 4.27 | 4.36 | -0.09 |
| Jul | 4.33 | 4.27 | 0.06 |
| Aug | 3.47 | 3.46 | 0.01 |
| Sep | 2.88 | 2.82 | 0.06 |
| Oct | 2.57 | 2.56 | 0.01 |
| Nov | 1.04 | 1.03 | 0.01 |
| Dec | 0.74 | 0.84 | -0.10 |
27.18 | 27.23 | -0.05 |