| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.61 | 3.93 | -0.32 |
| Feb | 3.43 | 3.77 | -0.34 |
| Mar | 3.61 | 3.74 | -0.13 |
| Apr | 3.33 | 3.54 | -0.21 |
| May | 3.75 | 3.85 | -0.10 |
| Jun | 5.27 | 5.25 | 0.02 |
| Jul | 5.26 | 5.55 | -0.29 |
| Aug | 5.37 | 5.59 | -0.22 |
| Sep | 4.86 | 4.93 | -0.07 |
| Oct | 3.87 | 3.81 | 0.06 |
| Nov | 2.90 | 2.88 | 0.02 |
| Dec | 3.69 | 3.63 | 0.06 |
48.95 | 50.47 | -1.52 |