| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.50 | 3.61 | -0.11 |
| Feb | 3.36 | 3.43 | -0.07 |
| Mar | 4.44 | 4.58 | -0.14 |
| Apr | 4.14 | 4.25 | -0.11 |
| May | 3.64 | 3.61 | 0.03 |
| Jun | 4.15 | 4.13 | 0.02 |
| Jul | 3.56 | 3.69 | -0.13 |
| Aug | 3.49 | 3.46 | 0.03 |
| Sep | 3.76 | 3.74 | 0.02 |
| Oct | 4.65 | 4.78 | -0.13 |
| Nov | 3.87 | 3.93 | -0.06 |
| Dec | 4.56 | 4.72 | -0.16 |
47.12 | 47.93 | -0.81 |