| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.49 | 3.68 | -0.19 |
| Feb | 2.92 | 3.05 | -0.13 |
| Mar | 4.12 | 4.00 | 0.12 |
| Apr | 4.09 | 3.79 | 0.30 |
| May | 3.89 | 3.96 | -0.07 |
| Jun | 4.60 | 4.58 | 0.02 |
| Jul | 4.57 | 4.62 | -0.05 |
| Aug | 4.30 | 4.66 | -0.36 |
| Sep | 4.56 | 4.62 | -0.06 |
| Oct | 4.60 | 4.63 | -0.03 |
| Nov | 3.83 | 3.87 | -0.04 |
| Dec | 4.29 | 4.46 | -0.17 |
49.26 | 49.92 | -0.66 |