| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.30 | 3.46 | -0.16 |
| Feb | 2.62 | 2.77 | -0.15 |
| Mar | 3.59 | 3.63 | -0.04 |
| Apr | 4.86 | 5.02 | -0.16 |
| May | 5.00 | 5.14 | -0.14 |
| Jun | 4.98 | 5.23 | -0.25 |
| Jul | 4.53 | 4.63 | -0.10 |
| Aug | 3.37 | 3.24 | 0.13 |
| Sep | 3.47 | 3.65 | -0.18 |
| Oct | 3.62 | 3.69 | -0.07 |
| Nov | 3.81 | 3.89 | -0.08 |
| Dec | 3.21 | 3.43 | -0.22 |
46.36 | 47.78 | -1.42 |