| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.89 | 4.12 | -0.23 |
| Feb | 3.48 | 3.55 | -0.07 |
| Mar | 4.77 | 5.03 | -0.26 |
| Apr | 4.41 | 4.67 | -0.26 |
| May | 3.49 | 3.41 | 0.08 |
| Jun | 4.06 | 4.07 | -0.01 |
| Jul | 3.27 | 3.19 | 0.08 |
| Aug | 3.85 | 3.76 | 0.09 |
| Sep | 4.06 | 4.07 | -0.01 |
| Oct | 4.68 | 4.70 | -0.02 |
| Nov | 4.24 | 4.22 | 0.02 |
| Dec | 4.73 | 4.95 | -0.22 |
48.93 | 49.74 | -0.81 |