| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.55 | 0.57 | -0.02 |
| Feb | 0.80 | 0.76 | 0.04 |
| Mar | 1.41 | 1.40 | 0.01 |
| Apr | 2.90 | 2.90 | 0.00 |
| May | 3.83 | 3.81 | 0.02 |
| Jun | 4.46 | 4.29 | 0.17 |
| Jul | 3.19 | 3.26 | -0.07 |
| Aug | 3.31 | 3.27 | 0.04 |
| Sep | 2.93 | 2.83 | 0.10 |
| Oct | 2.27 | 2.29 | -0.02 |
| Nov | 1.20 | 1.18 | 0.02 |
| Dec | 0.81 | 0.84 | -0.03 |
27.66 | 27.40 | 0.26 |