| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.57 | 3.50 | 0.07 |
| Feb | 3.01 | 2.99 | 0.02 |
| Mar | 4.06 | 3.97 | 0.09 |
| Apr | 3.65 | 3.66 | -0.01 |
| May | 3.81 | 3.63 | 0.18 |
| Jun | 4.40 | 4.53 | -0.13 |
| Jul | 4.83 | 4.86 | -0.03 |
| Aug | 4.68 | 4.76 | -0.08 |
| Sep | 4.89 | 5.31 | -0.42 |
| Oct | 3.51 | 3.64 | -0.13 |
| Nov | 3.38 | 3.34 | 0.04 |
| Dec | 3.52 | 3.47 | 0.05 |
47.31 | 47.66 | -0.35 |