| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.65 | 4.63 | 0.02 |
| Feb | 4.74 | 4.66 | 0.08 |
| Mar | 4.92 | 4.85 | 0.07 |
| Apr | 3.92 | 4.01 | -0.09 |
| May | 3.31 | 3.33 | -0.02 |
| Jun | 4.52 | 4.36 | 0.16 |
| Jul | 4.64 | 4.73 | -0.09 |
| Aug | 4.39 | 4.34 | 0.05 |
| Sep | 3.83 | 3.79 | 0.04 |
| Oct | 3.38 | 3.38 | 0.00 |
| Nov | 3.91 | 3.89 | 0.02 |
| Dec | 4.72 | 4.70 | 0.02 |
50.93 | 50.67 | 0.26 |