| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.04 | 4.02 | 0.02 |
| Feb | 4.57 | 4.60 | -0.03 |
| Mar | 4.67 | 4.95 | -0.28 |
| Apr | 4.85 | 5.06 | -0.21 |
| May | 5.17 | 5.60 | -0.43 |
| Jun | 4.42 | 4.15 | 0.27 |
| Jul | 4.29 | 4.62 | -0.33 |
| Aug | 3.70 | 3.47 | 0.23 |
| Sep | 3.46 | 3.67 | -0.21 |
| Oct | 3.87 | 3.99 | -0.12 |
| Nov | 3.87 | 3.92 | -0.05 |
| Dec | 4.87 | 4.93 | -0.06 |
51.78 | 52.98 | -1.20 |