| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 3.67 | 3.80 | -0.13 |
| Feb | 3.07 | 3.29 | -0.22 |
| Mar | 3.89 | 3.95 | -0.06 |
| Apr | 3.36 | 3.49 | -0.13 |
| May | 3.75 | 3.93 | -0.18 |
| Jun | 4.57 | 4.48 | 0.09 |
| Jul | 5.64 | 5.58 | 0.06 |
| Aug | 5.46 | 5.34 | 0.12 |
| Sep | 5.01 | 4.77 | 0.24 |
| Oct | 3.79 | 3.80 | -0.01 |
| Nov | 3.17 | 3.62 | -0.45 |
| Dec | 3.48 | 3.86 | -0.38 |
48.86 | 49.91 | -1.05 |