| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.48 | 4.42 | 0.06 |
| Feb | 4.42 | 4.40 | 0.02 |
| Mar | 4.65 | 4.62 | 0.03 |
| Apr | 3.58 | 3.54 | 0.04 |
| May | 3.49 | 3.24 | 0.25 |
| Jun | 4.68 | 4.67 | 0.01 |
| Jul | 4.05 | 4.24 | -0.19 |
| Aug | 4.83 | 4.49 | 0.34 |
| Sep | 3.85 | 3.86 | -0.01 |
| Oct | 3.18 | 3.27 | -0.09 |
| Nov | 3.67 | 3.68 | -0.01 |
| Dec | 4.62 | 4.69 | -0.07 |
49.50 | 49.12 | 0.38 |