| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.48 | 3.59 | -0.11 |
| Feb | 2.90 | 2.98 | -0.08 |
| Mar | 4.17 | 4.14 | 0.03 |
| Apr | 3.74 | 3.86 | -0.12 |
| May | 3.91 | 3.91 | 0.00 |
| Jun | 4.29 | 4.46 | -0.17 |
| Jul | 4.60 | 4.65 | -0.05 |
| Aug | 4.34 | 4.49 | -0.15 |
| Sep | 4.00 | 4.03 | -0.03 |
| Oct | 4.11 | 3.97 | 0.14 |
| Nov | 3.32 | 3.32 | 0.00 |
| Dec | 4.29 | 4.36 | -0.07 |
47.15 | 47.76 | -0.61 |