| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.00 | 3.90 | 0.10 |
| Feb | 3.48 | 3.37 | 0.11 |
| Mar | 4.67 | 4.64 | 0.03 |
| Apr | 4.41 | 4.46 | -0.05 |
| May | 3.65 | 3.49 | 0.16 |
| Jun | 4.19 | 4.34 | -0.15 |
| Jul | 3.57 | 3.56 | 0.01 |
| Aug | 3.87 | 3.89 | -0.02 |
| Sep | 4.02 | 4.02 | 0.00 |
| Oct | 4.97 | 4.89 | 0.08 |
| Nov | 4.08 | 4.01 | 0.07 |
| Dec | 4.88 | 4.87 | 0.01 |
49.79 | 49.44 | 0.35 |