| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.44 | 4.39 | 0.05 |
| Feb | 4.54 | 4.48 | 0.06 |
| Mar | 4.80 | 4.71 | 0.09 |
| Apr | 3.70 | 3.73 | -0.03 |
| May | 3.04 | 3.07 | -0.03 |
| Jun | 4.27 | 4.48 | -0.21 |
| Jul | 4.37 | 4.44 | -0.07 |
| Aug | 4.39 | 4.32 | 0.07 |
| Sep | 3.93 | 3.75 | 0.18 |
| Oct | 3.25 | 3.20 | 0.05 |
| Nov | 3.57 | 3.62 | -0.05 |
| Dec | 4.57 | 4.53 | 0.04 |
48.87 | 48.72 | 0.15 |