| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 4.50 | 4.40 | 0.10 |
| Feb | 4.13 | 4.25 | -0.12 |
| Mar | 4.53 | 4.32 | 0.21 |
| Apr | 3.63 | 3.59 | 0.04 |
| May | 2.79 | 2.98 | -0.19 |
| Jun | 4.40 | 4.42 | -0.02 |
| Jul | 4.67 | 4.53 | 0.14 |
| Aug | 4.78 | 4.57 | 0.21 |
| Sep | 3.73 | 3.82 | -0.09 |
| Oct | 2.83 | 2.92 | -0.09 |
| Nov | 3.06 | 2.99 | 0.07 |
| Dec | 4.61 | 4.47 | 0.14 |
47.66 | 47.26 | 0.40 |