| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.74 | 3.69 | 0.05 |
| Feb | 3.28 | 3.18 | 0.10 |
| Mar | 4.00 | 3.98 | 0.02 |
| Apr | 3.60 | 3.62 | -0.02 |
| May | 3.90 | 3.92 | -0.02 |
| Jun | 4.88 | 4.81 | 0.07 |
| Jul | 5.52 | 5.50 | 0.02 |
| Aug | 5.85 | 5.73 | 0.12 |
| Sep | 6.35 | 6.36 | -0.01 |
| Oct | 3.71 | 3.92 | -0.21 |
| Nov | 3.29 | 3.33 | -0.04 |
| Dec | 3.50 | 3.47 | 0.03 |
51.62 | 51.51 | 0.11 |