| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.68 | 4.74 | -0.06 |
| Feb | 3.87 | 3.89 | -0.02 |
| Mar | 4.57 | 4.50 | 0.07 |
| Apr | 4.61 | 4.75 | -0.14 |
| May | 4.39 | 4.60 | -0.21 |
| Jun | 4.70 | 4.75 | -0.05 |
| Jul | 4.56 | 5.11 | -0.55 |
| Aug | 4.97 | 5.36 | -0.39 |
| Sep | 4.54 | 4.67 | -0.13 |
| Oct | 3.96 | 3.80 | 0.16 |
| Nov | 4.17 | 4.11 | 0.06 |
| Dec | 4.61 | 4.87 | -0.26 |
53.63 | 55.15 | -1.52 |