| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.89 | 0.91 | -0.02 |
| Feb | 0.93 | 0.87 | 0.06 |
| Mar | 1.61 | 1.55 | 0.06 |
| Apr | 2.81 | 2.80 | 0.01 |
| May | 4.07 | 3.81 | 0.26 |
| Jun | 4.46 | 4.20 | 0.26 |
| Jul | 4.22 | 3.90 | 0.32 |
| Aug | 4.15 | 4.17 | -0.02 |
| Sep | 3.47 | 3.40 | 0.07 |
| Oct | 2.98 | 2.97 | 0.01 |
| Nov | 1.75 | 1.73 | 0.02 |
| Dec | 1.21 | 1.17 | 0.04 |
32.55 | 31.48 | 1.07 |