| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.47 | 4.85 | -0.38 |
| Feb | 4.13 | 4.33 | -0.20 |
| Mar | 4.56 | 4.75 | -0.19 |
| Apr | 3.82 | 4.13 | -0.31 |
| May | 3.82 | 3.90 | -0.08 |
| Jun | 4.19 | 4.08 | 0.11 |
| Jul | 4.07 | 4.14 | -0.07 |
| Aug | 4.57 | 5.19 | -0.62 |
| Sep | 3.76 | 3.86 | -0.10 |
| Oct | 3.41 | 3.71 | -0.30 |
| Nov | 3.72 | 3.92 | -0.20 |
| Dec | 4.72 | 5.05 | -0.33 |
49.24 | 51.91 | -2.67 |